Malicious PDF — malware analysis report

Static analysis result for SHA-256 5058b3376fcc9f49…

MALICIOUS

PDF

44.4 KB Created: 2020-08-07 04:59:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a37f15415f0adc4a6aedb0999a2ccbec SHA-1: 2318c6509505c139829d3680bb0282d4b321052f SHA-256: 5058b3376fcc9f49d45d5416a0db78032182bab9db7ab63e6c52337ba08ec801
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as 'asco breast cancer guidelines 2020 pdf'. This link, `https://ttraff.cc/pify?keyword=asco+breast+cancer+guidelines+2020+pdf`, points to known malicious infrastructure. The document also contains a large number of external PDF links, many hosted on Shopify, which is indicative of a link farm used to obscure the malicious redirector. The ML classifier strongly flagged this PDF as malicious.

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://ttraff.cc/pify?keyword=asco+breast+cancer+guidelines+2020+pdf In PDF document text
    • http://vimup.biancaking.ch/uploads/1/3/1/4/131409909/8859082.pdfIn PDF document text
    • http://files.afreedombooks.com/uploads/1/3/1/4/131483440/b23ba7d2b0.pdfIn PDF document text
    • http://files.homefromhomechildcarers.co.uk/uploads/1/3/1/6/131636692/3311653.pdfIn PDF document text
    • http://juxutof.makergirlz.org/uploads/1/3/0/8/130874457/duvalu.pdfIn PDF document text
    • http://files.greenislegardens.com/uploads/1/3/0/9/130969097/6627674.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/1/0429/9027/2675/files/49944636553.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8239/1451/files/nukujawafef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4276/5991/files/kosigekevanejozir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3302/4929/files/97832891701.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5644/8156/files/tirukaxelapebafiwati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2032/8853/files/tufokulenavosoxev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7689/3334/files/56891381997.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0992/3480/files/wozozepufakira.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8976/5279/files/29574175526.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5199/9637/files/legitanafaxevafagum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1733/1100/files/python_char_to_ascii.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kenawuvotijogajutimev.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

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FDA 5728 bytes
SHA-256: 6e43181c4644939841f5041bd3d52d6024b0a042e19afb0b9e63de6a493e08c7
font_01_sfnt_off00008363.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8363 9680 bytes
SHA-256: 8b5d5d1ba338eb2b7f7219cd847cc24995b8e4c73c210e321caa392d835fd8f7

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