Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab8d0de69daebc46…

MALICIOUS

PDF

75.6 KB Created: 2021-03-30 05:19:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 08b83b476bf633af1140a9e8a8549071 SHA-1: 553f151f1fb495a2ecb0ec7a8e586dad6750c3d5 SHA-256: ab8d0de69daebc466981593b59d826ffcd1ee9f8fc34f069ea7b665140898f85
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/123?utm_term=atualizar+android+lg+d337 PDF link annotation
    • https://cdn.sqhk.co/dafibuxoki/cpwxf9x/kanafegarosuvuwurex.pdfIn PDF document text
    • https://cdn.sqhk.co/bagadogod/fhiFaB1/metawujo.pdfIn PDF document text
    • https://cdn.sqhk.co/fovipobex/VidhgDl/pineapple_weed_strain_sativa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369782/normal_5fdde32ae249b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472793/normal_5fda7909a2e26.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496402/normal_5fdb1f48b38ae.pdfIn PDF document text
    • https://cdn.sqhk.co/jivazufevi/aHiaQya/barbecue_chicken_thighs_in_the_oven.pdfIn PDF document text
    • https://cdn.sqhk.co/wenegifuteg/jfDnigS/cartographers_for_social_equality_episode.pdfIn PDF document text
    • http://jerunuju.mypressonline.com/basics_of_engineering_economy_solutions.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485005/normal_5fff3560d4f8c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://69868269-04aa-4a0d-8379-1371762fd556.filesusr.com/ugd/d8beff_47b4849cff444bc9ace17b6802241eda.pdf?index=trueIn PDF document text
    • https://435a888a-8f80-410d-aa77-77edd6e4491d.filesusr.com/ugd/51fec0_180f1354ddd044c393e883cbea1bc743.pdf?index=trueIn PDF document text
    • http://xirozaza.onlinewebshop.net/biblical_baby_boy_names.pdfIn PDF document text
    • http://zatuvejamubolo.atwebpages.com/what_is_economic_freedom_fighters.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17d84672-b8fd-4f5a-8a6e-cade8f90ad41/popeil_pasta_maker_replacement_parts.pdfIn PDF document text
    • http://fotizojorirepel.onlinewebshop.net/gst_tax_slab_for_ay_2020_19.pdfIn PDF document text
    • https://a208a2de-cee2-48c2-86e3-c620a022946d.filesusr.com/ugd/dda32d_54abd16447314414bd76c8bc65e37f63.pdf?index=trueIn PDF document text
    • https://a513df27-8ea1-49e5-9b48-af726a3c99b5.filesusr.com/ugd/c567c1_2eb5ae64b4f24d22a414e8e1197c1996.pdf?index=trueIn PDF document text
    • https://411be8f8-4ba1-40b5-9edf-cc4a2c3d5ecc.filesusr.com/ugd/a86d68_59c89d03f0ea49288018867f460c3345.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1911861-e8e9-4f72-a1f2-54115828e657/jeboxokovul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fb96521-9ce3-40bd-b133-8224115be993/manicure_pedicure_near_me_prices.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_off0000e674.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE674 5100 bytes
SHA-256: 8a5d0cde7a69723ae8925849fea68fb75caf2c155c2ffc3d22a45b137c714748
font_01_sfnt_off0000f7eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7EB 13128 bytes
SHA-256: 6082daab4333c7a4e8285d43bd6bf88afff98962adcfc3c35c28ba518e1b0b12

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