Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1ac378c3d629fe1…

MALICIOUS

PDF

63.3 KB Created: 2020-08-10 21:21:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 2289b7581e47e4b0ca3881232a38a259 SHA-1: e56ec89f1ab2683378bf0956df824e5363f43bc0 SHA-256: a1ac378c3d629fe16c8a541b1d02cb575d62d2e99ffacb9f5ea6ea33bf26d263
194 Risk Score

Malware Insights

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

The PDF contains a link to a redirector URL, ttraff.com, which is flagged as malicious. This redirector is likely used to obscure the final destination, which appears to be a link farm hosted on Shopify, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the URL and keywords suggesting a lure.

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.com/pify?keyword=cisco+catalyst+3650+manual+pdf In PDF document text
    • http://files.theharvesthub.org/uploads/1/3/1/1/131164117/tixox_lotedu_tugafisovaf.pdfIn PDF document text
    • http://files.zetusbees.com/uploads/1/3/0/7/130740165/norupowi-kinamuzanapanop-vizubinadimewu-dunene.pdfIn PDF document text
    • http://files.sorcerousendeavors.com/uploads/1/3/0/7/130776054/tasiboluzes-fejiwe-falivurofonoro-malabap.pdfIn PDF document text
    • http://files.concordstowing.com/uploads/1/3/1/6/131607163/1902650.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/1/0431/2884/8538/files/zatipebebamemidavere.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/dazuzal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0459/1271/files/kijudetogexozanokimufi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6821/9799/files/11425064930.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4750/1474/files/54509001547.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0820/4704/files/difurakumategorusebuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5453/0709/files/xoviwuziw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0200/3619/files/figemobodan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0906/3582/files/67127457824.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 2

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_off0000b1ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1CA 5796 bytes
SHA-256: 89332c9bfa1dfc295f214731b81049aa6220a6fdfc665e3bdce0931f1e5ec8fc
font_01_sfnt_off0000c56d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC56D 13384 bytes
SHA-256: dddba5cfa28d4b7ce16b4741b3c79f3a82d7cdc9c1cb851cdece1603889c219c

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