Malicious PDF — malware analysis report

Static analysis result for SHA-256 b808748de03473da…

MALICIOUS

PDF

47.5 KB Created: 2020-08-06 13:11:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7dd23e2e416ea7976222bed5f4481027 SHA-1: c8eeb38b90a199f64127a73ad229b30434c318b8 SHA-256: b808748de03473da4d7f31c2a416ed2f22db23095810b6a92a91c7508821c396
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify domains and one critical link to a known malicious redirector. The primary malicious URL is https://ttraff.com/pify?keyword=statistical+rethinking+2nd+edition+pdf+download, which likely serves as a lure to download further malicious content. The document body contains garbled text and embedded URLs, reinforcing the 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.com/pify?keyword=statistical+rethinking+2nd+edition+pdf+download In PDF document text
    • http://files.numpucsh.com/uploads/1/3/1/6/131637047/3390631.pdfIn PDF document text
    • http://files.littletweetstationery.co.uk/uploads/1/3/1/3/131379552/1d657b12.pdfIn PDF document text
    • http://files.centrepointecincinnati.com/uploads/1/3/1/4/131406413/e08b8.pdfIn PDF document text
    • http://files.thunderbearwoodsmiths.com/uploads/1/3/1/4/131406717/1665908.pdfIn PDF document text
    • http://files.westfieldhsbands.org/uploads/1/3/1/4/131453054/givofukodeko.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/1/0435/2750/4031/files/golelusifujagelufov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1811/5480/files/kujilatodixiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8106/4853/files/bimivojepepotezudivujup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5396/3678/files/bihar_tet_notification.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7016/7966/files/marc_haven_cagliostro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4364/9698/files/solixupafajexotemadupu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9226/3583/files/29645860650.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0390/2112/files/fezuredebifibogev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3880/2073/files/rojimiwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8457/7956/files/rifaronovimoxatusas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3899/6642/files/nozekewavenujuwawowe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4913/9880/files/84103689407.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5592/2852/files/ranikunilizovil.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_off00006d74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D74 5808 bytes
SHA-256: 5ef75b0b1f77720c46a4c7ef71dfad95021d8850fdf125ea5a498fedc4a1030d
font_01_sfnt_off00008148.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8148 15128 bytes
SHA-256: c8385f102a787d23962df54a0dcd8c3ba4e9cc4950462bb05ff8a76f34b4f2e7

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