Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a315532281c846c…

MALICIOUS

PDF

77.4 KB Created: 2021-05-23 08:10:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 08ae95f2b7e41578db2e60fe94a23ee3 SHA-1: b36ab55ce76ee36c38b49544e7df9bdcc1426e98 SHA-256: 6a315532281c846c4739779748d2876a41609f7428561e9f23b2818bb6bcb513
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • 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.
  • 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://lozipotod.ru/strik?utm_term=4.3+liter+v6+vortec+engine+diagram PDF link annotation
    • https://saripubisopa.weebly.com/uploads/1/3/5/3/135322362/bexuxotom.pdfIn PDF document text
    • https://tedamitaza.weebly.com/uploads/1/3/0/7/130740371/zilat-wajukodupabed.pdfIn PDF document text
    • https://renobikedasel.weebly.com/uploads/1/3/4/8/134897329/podagazutaxem_dogexekupud.pdfIn PDF document text
    • https://getelomivono.weebly.com/uploads/1/3/0/7/130776590/005457c1bdc9c7.pdfIn PDF document text
    • https://sazezikamujut.weebly.com/uploads/1/3/1/4/131438312/labeninelupigoj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373779/normal_6019d18bc33ac.pdfIn PDF document text
    • https://nabebumiz.weebly.com/uploads/1/3/1/4/131452902/bisene.pdfIn PDF document text
    • https://sudusiwigi.weebly.com/uploads/1/3/1/0/131069987/jatuxodamuli.pdfIn PDF document text
    • https://vinunawamezod.weebly.com/uploads/1/3/1/3/131380031/wixelokate.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428039/normal_600fbb8d6e2db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369165/normal_604b7b4218b63.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fadadedezeker/vemowugejure.pdfIn PDF document text
    • https://s3.amazonaws.com/mavixu/la_odisea_resumen_por_cantos.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/how_to_give_pills_through_a_peg_tube.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95c0197a-c126-4afe-9f9d-f78798768e3a/26358173802.pdfIn PDF document text
    • https://s3.amazonaws.com/midizaxopazeji/autograph_tamil_movie_video_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8132a1b-326c-4e9d-91d4-15e4808d3aad/maya_angelou_still_i_rise_poem_theme.pdfIn PDF document text
    • https://s3.amazonaws.com/tokudapele/kenmore_chest_freezer_model_253_basket.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f73e67d-74aa-42d6-b108-195346705631/10024532334.pdfIn PDF document text
    • https://s3.amazonaws.com/kumasala/adobe_premiere_pro_cs5_mac_free_full_download.pdfIn PDF document text
    • https://s3.amazonaws.com/rikolesafuwofar/tribe_on_homecoming_and_belonging_quotes.pdfIn PDF document text
    • https://s3.amazonaws.com/gisujubolidine/lafuxubafe.pdfIn PDF document text
    • https://s3.amazonaws.com/jofunozuzof/vutotumivag.pdfIn PDF document text
    • https://s3.amazonaws.com/jitimesolagun/80755793924.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0EC 5484 bytes
SHA-256: b08565d6553ce4599ea5349ecfc2b48eb9fc9cca42964777a7dfcbf532c23f26
font_01_sfnt_off00010391.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10391 10612 bytes
SHA-256: 3755329fd369367496db0036f271041c59cdf45e8933e527ed7aea44b00f4a22

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