Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b7e6121287a705e…

MALICIOUS

PDF

73.0 KB Created: 2021-03-09 22:41:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 09a7566755ff74e68e848c621b1dcadb SHA-1: 977949302fa8fa404fefe4a4dcb69376b40bf9e7 SHA-256: 2b7e6121287a705efa5960994f99a890a658a982b64d8aa2ecae10272a46ab13
194 Risk Score

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 and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=illinois+football+officials+association PDF link annotation
    • http://gafabotipunofu.mywebcommunity.org/49535336775.pdfIn PDF document text
    • https://cdn.sqhk.co/balaragu/h0En2gc/fubipakalomexuzi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427105/normal_5ffdea6d00ac7.pdfIn PDF document text
    • https://pebunapuvunasa.weebly.com/uploads/1/3/5/9/135970795/92fad4edbd.pdfIn PDF document text
    • https://worijuxadije.weebly.com/uploads/1/3/4/8/134863955/limuzegemeku.pdfIn PDF document text
    • https://cdn.sqhk.co/rebiguta/ieigkl1/g4k_snake_girl_rescue_game_walkthrough.pdfIn PDF document text
    • https://cdn.sqhk.co/girolivudafo/j4jciwz/quad_squad_meaning_in_urdu.pdfIn PDF document text
    • https://cdn.sqhk.co/xilelawemu/hjffhca/dixie_d_amelio_new_song.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486535/normal_5fd1fd85487b5.pdfIn PDF document text
    • http://gejokakop.mygamesonline.org/mobile_app_development_basics.pdfIn PDF document text
    • http://xiwakaravivomik.scienceontheweb.net/ruger_mini_14_10_round_magazine_amazon.pdfIn PDF document text
    • https://jawoxaze.weebly.com/uploads/1/3/0/9/130968973/a10c0bc711d52.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/jawusawar/93911924766.pdfIn PDF document text
    • https://dd39d194-9042-494f-90ab-223c96cf8da5.filesusr.com/ugd/5d3909_fcec7a15542d4f27bac1bc82134edd86.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pewebopufupe/jabupanil.pdfIn PDF document text
    • https://c18d9829-3add-4afa-bc87-35007fe3998a.filesusr.com/ugd/70c1ec_faff23827be64be49df28b654aac7efc.pdf?index=trueIn PDF document text
    • https://1a2149e7-ca7f-4e7c-a584-0e483de6f3af.filesusr.com/ugd/9219f8_e6a61a693f2b4c2ba7786484e1046f8a.pdf?index=trueIn PDF document text
    • https://c8d0f166-86fd-441b-8df5-aa5e6c6c7644.filesusr.com/ugd/f4b3af_0d83519bf12c4d0389d0fcf45f80cc0a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/setaxilitozuko/93889241656.pdfIn PDF document text
    • https://s3.amazonaws.com/veledabejufi/sorozugelodolako.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e20e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE20E 4856 bytes
SHA-256: fea69204bb3bc17d8d99190ebed32d4fc6ebf875ad70028b0c96fd565af3773c
font_01_sfnt_off0000f2aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2AA 10672 bytes
SHA-256: ea440b172d93bf83bfac733d9a67329c3a00ca646cf3a35e7562a049a968baa1