Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa1653988033ae42…

MALICIOUS

PDF

38.4 KB Created: 2020-08-14 23:54:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d2bb26c02a33f9227f9d8eeca82533d7 SHA-1: d8b6dbd0514a110d5833ef763b28f67431d2d0e3 SHA-256: aa1653988033ae4236478974f54c55c7bed3661ec68ca0cfb2b4cf579e11ba77
202 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=childminder+home+risk+assessment+template'. This URL is presented within the document body, disguised as a template download. The document also contains a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic. The presence of a visual download button further supports a lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=childminder+home+risk+assessment+template In PDF document text
    • http://files.bikeforlifesd.org/uploads/1/3/1/8/131856446/zufaji.pdfIn PDF document text
    • http://files.judithmary.com/uploads/1/3/0/9/130970001/4277096.pdfIn PDF document text
    • http://wowol.lydiaannflymasters.com/uploads/1/3/1/3/131379552/ed648b1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4876/2529/files/most_common_idioms_and_phrases_with_meanings_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8266/8437/files/13553226940.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7085/7122/files/reliable_time_server.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2042/7157/files/26933839477.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5216/2462/files/affinity_chromatography_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2670/0696/files/fifavixasuvalufotepuziv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7062/6723/files/english_encyclopedia_dictionary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3404/9703/files/72087961277.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6874/2040/files/2011_bmw_328i_owners_manual.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004cb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CB9 5072 bytes
SHA-256: 74e5035c1eb5a720ffa1a9db63d9d76845ce1d22cf614942b1dc8bb1ad270dda
font_01_sfnt_off00005dc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DC0 9696 bytes
SHA-256: 837dc744175fac70c682552897a4a8e819d1c0aad6576412bfba9f8dbd717b25
font_02_sfnt_off00007eb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EB1 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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