Malicious PDF — malware analysis report

Static analysis result for SHA-256 981add3b202a8a20…

MALICIOUS

PDF

43.8 KB Created: 2020-10-15 12:55:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3738b991d4711b42fea95f2e5b295dee SHA-1: 60a1ffd58865620aaec75be5900836370c524171 SHA-256: 981add3b202a8a2053e9a9ceeb472e6007db0f5011257bec018501f25ecf9146
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://gettraff.ru/123?keyword=renegade+craft+fair+in+nyc+guide In PDF document text
    • https://tejigenunonim.weebly.com/uploads/1/3/0/8/130813632/wopujemufonaxeboz.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/vifotatilaw.pdfIn PDF document text
    • https://sozivutapadonen.weebly.com/uploads/1/3/1/1/131164462/2877550.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/8276696.pdfIn PDF document text
    • https://tejigenunonim.weebly.com/uploads/1/3/0/8/130813632/xebopuviban.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/wirexanusir.pdfIn PDF document text
    • https://buluzuzumaz.weebly.com/uploads/1/3/1/6/131636727/4265599.pdfIn PDF document text
    • https://paguzijap.weebly.com/uploads/1/3/1/4/131453408/posodunigunepa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366043/normal_5f87805096f22.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366384/normal_5f87529c4b692.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366028/normal_5f8720dbead28.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367283/normal_5f87d4c263cae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367656/normal_5f87c50fbf3c5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/4372/4698/files/lalitunapowegibelos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1420/7134/files/93817237136.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/2448/0949/files/53274240136.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2174/5822/files/zolodenito.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1cf1878-ac1a-4d50-89fc-8a6784fbacbb/14789726276.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3edd0743-bfdb-4b82-9187-9d7f1f89dee5/88909567711.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/edf1e55b-cb83-41b8-9a00-d5909738478c/49644817409.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c2078a2-c21e-4f95-adff-c28f5fb53adf/nitowopizagoxebapezeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3332/9815/files/new_balance_857.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3551/5290/files/dyer_maker_lyrics_meaning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7477/5957/files/tai_chi_moves_step_by_step.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_off00006ca3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CA3 5088 bytes
SHA-256: 08122879336ff7c8113ece791eb68ca8c0e427d1d6111b7b48ba540b545f6b4b
font_01_sfnt_off00007e08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E08 10420 bytes
SHA-256: 9841db12c785fe10866cb70fa1b3d8cdbebe960edfbdc8bca690466c180760bf

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