Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee22e3097049fb1c…

MALICIOUS

PDF

75.5 KB Created: 2021-03-11 20:57:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: acd667ad0475f0ae870dfd78c8e28b80 SHA-1: 032ea6a0df96125e3b1a42a84f02fa200476144a SHA-256: ee22e3097049fb1c6afbc8d1cd328b971eb45978b1761ec3b01051b94d8bcccc
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable domains, suggesting a link farm or SEO manipulation tactic. The embedded content appears to be junk data, but the presence of external links and the overall detection profile point towards a phishing or malicious redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://gimoguvi.ru/wb?keyword=genie%20acsctg%20type%201%20frequency PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4454286/normal_6010a23a2047a.pdfIn PDF document text
    • https://gavedomosuzutu.weebly.com/uploads/1/3/4/2/134234743/xizotobuz-wawujipogokanab.pdfIn PDF document text
    • https://sazotavivi.weebly.com/uploads/1/3/1/1/131164406/bipegafozefeka-jofata-binunejuveneval.pdfIn PDF document text
    • http://murimubijejaba.mygamesonline.org/adjectives_with_negative_prefixes.pdfIn PDF document text
    • https://ralanuda.weebly.com/uploads/1/3/0/7/130775203/8307396.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368496/normal_5ffa115407980.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455370/normal_5fe5593c55bd9.pdfIn PDF document text
    • https://lasebotoxuxuxir.weebly.com/uploads/1/3/4/7/134729765/303707b78e5d.pdfIn PDF document text
    • http://nakekizedexu.getenjoyment.net/resumen_del_mundo_de_sofia_capitulos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427085/normal_6017064158291.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://9d3edb37-11ce-4d87-b861-4f8d850d55a0.filesusr.com/ugd/0d2aa0_382902790c034ecd9ad26f5a01dc8c2a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/befafuni/45501838325.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/896cbde1-4e28-47cd-bc9e-e2880d55ac4c/can_you_bring_hand_sanitizer_through_tsa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1e5e8f5-5d2c-4f25-80c3-87b29c92a567/nail_shop_open_on_sunday_in_baton_rouge.pdfIn PDF document text
    • https://s3.amazonaws.com/mozedijiz/3610255448.pdfIn PDF document text
    • https://ac65beef-1c88-4b01-a948-251493ed82f2.filesusr.com/ugd/09857b_52fd707cde6f47fb89e3db0d827c8444.pdf?index=trueIn PDF document text
    • https://8d6920c1-aef5-45ed-b1a0-e693d63948fb.filesusr.com/ugd/0a593f_f51acfec56754c1a99c3b0f9bf3efc20.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/9409b33b-ebff-417e-affd-58c5399f4479/cateye_cc-mc100w_price.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cbf6a274-62d6-4ebd-8587-832bb8e0c00e/luna_lunera_cascabelera_cancion_infantil_letra.pdfIn PDF document text
    • https://336ddc11-c37d-4cd6-9685-7accad2975f7.filesusr.com/ugd/479fa9_f8dd9f21190f4112ab5d47237825f4c3.pdf?index=trueIn PDF document text
    • https://5849b288-062f-49f8-a71b-da420f1f00fd.filesusr.com/ugd/c068f8_2d29e86bd64d486e884a14cb5edd8d8f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d67e8e1-714c-42c9-809c-e637a7fc2211/1996_ford_ranger_xlt_headlights.pdfIn PDF document text
    • http://widepidaba.atwebpages.com/gatevik.pdfIn PDF document text
    • https://s3.amazonaws.com/guxosa/dodger_stadium_food_guide_2019.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_off0000e798.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE798 5464 bytes
SHA-256: 3f3b46fb8e1729326896d8a89334266bc3a5256d13a5e3b0d6f8c046edf05f12
font_01_sfnt_off0000fa54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA54 11276 bytes
SHA-256: cca4423bdacdcfac69304c14a33f8a7dda6fac95e62504e22716504512429d4a

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