Malicious PDF — malware analysis report

Static analysis result for SHA-256 23320facd30923bb…

MALICIOUS

PDF

79.6 KB Created: 2021-06-02 08:55:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 51181e1a6c7f3689697ac7ae58e356d6 SHA-1: 959ca1b6847bbb0f1314bf6dc7e5498ef4cd8aa9 SHA-256: 23320facd30923bbe887d21cf1512de46abcb87609e8e945f773f6169fa42e65
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a malicious document designed to exploit users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://mezovuduw.ru/123?utm_term=cantico+delle+creature+originale+pdf PDF link annotation
    • https://moraraxewurazi.weebly.com/uploads/1/3/4/0/134042425/ff4f58.pdfIn PDF document text
    • https://gazonigupeti.weebly.com/uploads/1/3/4/8/134879892/6693111.pdfIn PDF document text
    • https://xotikavetaj.weebly.com/uploads/1/3/4/8/134861849/mopadew.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454049/normal_5fe910122f27f.pdfIn PDF document text
    • https://mukozuzaze.weebly.com/uploads/1/3/4/2/134265885/3181e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459341/normal_5fda351da8b8c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465007/normal_606dde0b2a1bb.pdfIn PDF document text
    • https://pedodexojur.weebly.com/uploads/1/3/0/7/130775447/jebal.pdfIn PDF document text
    • https://bikujezojodu.weebly.com/uploads/1/3/4/5/134587809/xabukodututikoj_parapo.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4407064/normal_60b55e909cca6.pdfIn PDF document text
    • https://xepidazezupos.weebly.com/uploads/1/3/5/3/135343087/kirip_saxorezogape_muxupidebo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366639/normal_5ff6623375210.pdfIn PDF document text
    • https://metifavogogebo.weebly.com/uploads/1/3/4/7/134716609/faxasita.pdfIn PDF document text
    • https://lepatoketi.weebly.com/uploads/1/3/4/7/134732542/943dc5a8c34d.pdfIn PDF document text
    • https://zedodunojoponex.weebly.com/uploads/1/3/6/0/136083391/jemexorakoberapu.pdfIn PDF document text
    • https://bevazemirif.weebly.com/uploads/1/3/4/8/134873662/dadovelo_mawovesufa_zafukedivulejof_betubonavutix.pdfIn PDF document text
    • https://vatozuserivowi.weebly.com/uploads/1/3/4/3/134385792/ropejozudi-tiruduvata-fetiluti-rakaxixadorofi.pdfIn PDF document text
    • https://lapifebe.weebly.com/uploads/1/3/2/6/132695874/puluj-daniwi-nibakewosu-tapukaruwikezo.pdfIn PDF document text
    • https://lonewarole.weebly.com/uploads/1/3/4/5/134593790/2575546.pdfIn PDF document text
    • https://sufafiderek.weebly.com/uploads/1/3/0/8/130814754/8638119.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412573/normal_5ff9450ea3c83.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/df5b1e11-8b13-4004-8466-bcb70c036c33/mackie_802vlz4_8-channel_compact_mixer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52a05012-46ae-41d7-8c42-dd2ce0615599/nixirekonebuvojavuripusi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86a0f55f-cbbe-405d-a876-b639c6dcc4df/what_is_difference_between_high_level_and_low_level_design.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad7d458b-43b5-4d5d-9850-d29b005c0918/83510105995.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4db9ce2b-527e-48af-988f-6b575488e808/yami_yugi_x_reader_deviantart.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA5A 5048 bytes
SHA-256: b847501f480703def4d423dba9d78eac10f56abfab9865e0a34f94292f7b57a3
font_01_sfnt_off0000fb93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB93 11624 bytes
SHA-256: ebd5dad1320c6e97077980e40155ea617bc15318ede05d420c3b832f6f2a9785
font_02_sfnt_off000120cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120CC 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

Open this report in the interactive analyzer, or submit your own file for analysis.