Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba1905f6c6c559cd…

MALICIOUS

PDF

45.5 KB Created: 2020-08-03 01:03:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 160ce3efa3a2a4c39f4431b87090b852 SHA-1: 81deaf829128b783eaa4d4568583ab50df7eb68b SHA-256: ba1905f6c6c559cd4f10f0fe014b07e1260a526c3bc2195e9754eab8c185bb4f
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically 'https://ttraff.cc/pify?keyword=future+mixtape+dirty+sprite+2'. This link is designed to redirect users to potentially harmful content. Additionally, the PDF exhibits characteristics of a link farm, embedding numerous external PDF links, many hosted on Shopify. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of the malicious redirector is sufficient evidence of malicious intent.

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=future+mixtape+dirty+sprite+2 In PDF document text
    • http://files.holdenshouseco.com/uploads/1/3/0/7/130739789/wofasov.pdfIn PDF document text
    • http://files.kortomomolu.com/uploads/1/3/1/4/131483371/taferajozo_levadoj_gipoximosemi_pevejipoget.pdfIn PDF document text
    • http://files.brandonmoorecomposition.com/uploads/1/3/1/4/131438766/muxigem.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/1/0436/4628/8025/files/84446884101.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5272/0543/files/dalos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6678/5949/files/wivoxepog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/11783771814.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5936/3488/files/wonidowobutasinorebedakux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5245/7369/files/windows_loader_2._3._0.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7811/3697/files/wifejejedef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4160/2198/files/kifubinijakir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6353/2951/files/47027013501.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9489/1943/files/31554967427.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5514/4347/files/71747619179.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 8

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_off000073ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73CA 5328 bytes
SHA-256: f937135953302ba48a5ddffed0ffafbc962cf23f7d6b2bf34bd1dad6d7d3ae91
font_01_sfnt_off000085e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85E1 10328 bytes
SHA-256: a793df051db56081d55d53d8b51d32b8c8b5db6959a46049463bc64eed7eca69

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