Malicious PDF — malware analysis report

Static analysis result for SHA-256 fac0f8cd71cab264…

MALICIOUS

PDF

123.3 KB Created: 2020-08-03 13:03:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 42124381f3b0abe4ffed5044030b2c29 SHA-1: 986bb7207f47fe35919e82a54bb4b022f45f072f SHA-256: fac0f8cd71cab264bbf3869ac86ba6fed52f53e02cf245ecdb719931b1c6c231
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be part of this malicious redirection scheme. The primary attack vector is likely a user clicking on the malicious link presented within the document, leading to a compromised system.

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=android+studio+tutorial+italiano+pdf In PDF document text
    • http://ripobupi.trianglewaterpartnership.org/uploads/1/3/1/4/131453213/b7c7e9d65a1.pdfIn PDF document text
    • http://files.thecactusroom.org/uploads/1/3/1/0/131069950/757e156281.pdfIn PDF document text
    • http://files.theskinthatburns.com/uploads/1/3/1/1/131164534/f66e7e2f6bf.pdfIn PDF document text
    • http://files.filamchurchmidlothian.com/uploads/1/3/0/7/130775362/b7a2492e6717fe0.pdfIn PDF document text
    • http://files.stroke.global/uploads/1/3/0/9/130968906/toderovokegug.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/1/0437/7883/4583/files/losekipogesevikawof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8977/2190/files/8987581509.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2010/8455/files/24076904181.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8307/0629/files/86520903271.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4655/2227/files/fawupugozi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4424/9499/files/pokemon_reborn_relationship_variables_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20745245188.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1527/2605/files/81725454219.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9191/1066/files/sims_4_no_censor_mod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2820/0096/files/18573865437.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017a26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17A26 5024 bytes
SHA-256: 470d899a28c4d10acf75b59a790fc1c832d455d84ae35d6a1b66c236ebd63b35
font_01_sfnt_off00018b4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18B4C 17936 bytes
SHA-256: c8014db3d1c7ff84332b59fe4dec684db63b09461954234ea7bc6ca293252fdd
font_02_sfnt_off0001c2c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C2C3 18336 bytes
SHA-256: bd9bcd7f02bd4f50ec89efceee3875509d1a8135c1b98417cb736a00c1ece421

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