Malicious PDF — malware analysis report

Static analysis result for SHA-256 012a7ce3336ea597…

MALICIOUS

PDF

61.6 KB Created: 2020-10-25 04:05:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: de4593ac0187537abed3362f8ddfc687 SHA-1: 4f592cf1be661de1e8728c5de39991cbc396d941 SHA-256: 012a7ce3336ea59761df965e572d95451be96a4e9ebfb7becfb70a3d3dafef2c
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://ttraff.me/123?keyword=warplanes+ww2+dogfight+android In PDF document text
    • https://cdn-cms.f-static.net/uploads/4372723/normal_5f9371c82c750.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374698/normal_5f8b5fc92bf2c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383566/normal_5f90d2862bab4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368975/normal_5f8a1b9ae439b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366027/normal_5f874c6b4ed4b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371553/normal_5f89d5cfc9ce6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409798/normal_5f932b57557f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381971/normal_5f943e785ce9a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368244/normal_5f8a632533432.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://cdn.shopify.com/s/files/1/0268/8391/5962/files/netis_e1_manual_portugues.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3860/5461/files/74409241213.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3183/4009/files/guide_rank_pb_garena.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9619/5737/files/95570663454.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a04e8f0e-6b5d-4449-bdf3-e6519ecc52c2/skyrim_vr_vampire_lord.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a3897c2-cfc0-4f28-ba26-a6be663ca575/99335761749.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b09a498-1fb0-43d4-aa1f-aeb79f0802c3/17704729491.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2fa1860-66b0-46e5-9f0c-309d058d57c3/18469384289.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9286/0327/files/heifer_international_jobs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6676/9058/files/how_to_find_initial_rate_of_reaction.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3358/2998/files/mythology_paris_and_helen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0487/0055/5414/files/mirror_window_tint_car.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/endodontic_treatment.pdfIn PDF document text
    • https://s3.amazonaws.com/bezegoluzose/mepidabejizoronuruzadefaz.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/curriculum_vitae_format_sri_lanka.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/amar_ujala_hindi_news_today.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_off0000a06f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA06F 5328 bytes
SHA-256: 72bd726bc8fc4ca20acaa2a74ff697580f5e7506dcd2c22856ef6136920240e6
font_01_sfnt_off0000b2a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2A1 11780 bytes
SHA-256: d38818ca93c4d60598a8109523ad26e722822ede29d5feae373864992bb835fa
font_02_sfnt_off0000da45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA45 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361