Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b21c96c80caea8a…

MALICIOUS

PDF

47.7 KB Created: 2020-08-22 07:46:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8a0fc01c7c77183217f9d95cf3f2a243 SHA-1: b59e04056ba791167b31d03bb478cff1526026f9 SHA-256: 1b21c96c80caea8a975266b003edf3b6afd600e831965a7581be90eb13f87af2
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.com/pify?keyword=aerosmith+greatest+hits+rar, which is likely used to redirect users to a phishing or malware-hosting site. Another heuristic indicates a PDF link farm, suggesting an attempt to artificially inflate search engine rankings or distribute content through numerous links.

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=aerosmith+greatest+hits+rar In PDF document text
    • http://paguti.andrewtozerfineart.com/uploads/1/3/2/7/132740900/wonufezetawiro-rezetusa.pdfIn PDF document text
    • http://xirim.w-here2stay.org/uploads/1/3/2/6/132682347/4794229.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/1/0434/5928/1061/files/84020826620.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7939/1637/files/filmywap_2018_new_bollywood_movies_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7144/6939/files/tuparesozufakasit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8863/2213/files/sazamirekefujobobifum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7791/9129/files/75764291373.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9166/5830/files/89442842835.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5446/4165/files/mirep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8138/4604/files/sabotufafakaxero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2186/7930/files/amina_al_mufti_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3227/3319/files/36374757387.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0599/3375/files/wuzirumimegubefukasewoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/bacterias_gram_positivas_aerobias.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 6

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_off00007c79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C79 5056 bytes
SHA-256: a4354fe59868771d5163bd6ce8f2b0eb6a9113ab27daf6eb10f094593180db5f
font_01_sfnt_off00008d84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D84 10768 bytes
SHA-256: 21916a91e01d17ce40a68029406946638cd5ed4f3fc1267e710773d13041edc4

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