Malicious PDF — malware analysis report

Static analysis result for SHA-256 880ef40a1d9373f6…

MALICIOUS

PDF

35.1 KB Created: 2020-08-07 12:53:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 216ce01d654fc5074f74054cbaa1ed5c SHA-1: d0e7ee9919a28fcdd29e6b25339f8d99bb4a726f SHA-256: 880ef40a1d9373f66d7106eb17bd038c40a4344d6b6887d908b32f1cec026fbc
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to Shopify domains hosting PDF files, but one critical link redirects to a known malicious domain (ttraff.com) via a keyword search. This indicates a phishing or scam attempt, likely using the 'free download' lure to redirect users to malicious infrastructure. The ML classifier also strongly flagged this PDF as malicious.

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/wb?keyword=smart%20cycle%20fisher%20price%20manual In PDF document text
    • http://gomiv.audioallure.com/uploads/1/3/0/8/130874253/xetin_merujilelatuz_bijudojefobezam.pdfIn PDF document text
    • http://files.inspectmyhomehpi.com/uploads/1/3/2/6/132682039/gewibusuxu_dojubemaxutu.pdfIn PDF document text
    • http://files.aldabragallery.com/uploads/1/3/0/7/130776180/danesuwexiwajo-difebixagadave.pdfIn PDF document text
    • http://files.scbailacademy.com/uploads/1/3/1/4/131437671/5953042.pdfIn PDF document text
    • http://files.mylunarsign.com/uploads/1/3/1/8/131857482/6fcae3.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/1/0434/0455/8488/files/83684909910.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5479/1832/files/obc_caste_list_in_mp.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3259/8938/files/kundalini_yoga_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3264/9636/files/analog_and_digital_communication_systems.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4114/4483/files/attack_on_titan_explained.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9024/6822/files/biotina_esmalte.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8658/3710/files/femederodebatebolufagafa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6377/9240/files/folapivizebakute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9191/1066/files/bowling_score_calculator.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_off00004927.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4927 5460 bytes
SHA-256: c372ac64f3fb92620f5af2ab2be2396e5e392af82d83062b59328b18ba995095
font_01_sfnt_off00005b99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B99 11380 bytes
SHA-256: 2694de0ae871361bed40e416380f64693223eae183d08f23a43d2730c33b5e4c

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