Malicious PDF — malware analysis report

Static analysis result for SHA-256 451c6f05acd18364…

MALICIOUS

PDF

54.4 KB Created: 2020-08-08 22:32:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 227c7d5d0de45d58d4892684ae5ec366 SHA-1: 062c7a4113f37b384c27f41570efa0b59d672ae3 SHA-256: 451c6f05acd18364b4469a3c1f7f6d1e09c57f5a7a3decbeafd4deaae10666d9
194 Risk Score

Malware Insights

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

The PDF contains a link to a redirector, ttraff.com, which is flagged as malicious. The document body also contains numerous links to Shopify-hosted PDFs, suggesting a link farm or SEO poisoning attempt. The ML classifier strongly indicated maliciousness. The primary attack pattern involves luring the user to a malicious site via a deceptive link.

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=bienestar+social+libros+pdf In PDF document text
    • http://files.fireflies-and-blossoms.com/uploads/1/3/1/3/131380944/bamopa_kufamasoperodes_damixamena_nusixis.pdfIn PDF document text
    • http://files.markkrawczykactor.com/uploads/1/3/1/4/131453405/guxifeno.pdfIn PDF document text
    • http://files.actwithpurpose.ca/uploads/1/3/2/6/132683251/7871308.pdfIn PDF document text
    • http://vusirusa.irwinpta.org/uploads/1/3/1/0/131070786/vawero.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/1/0440/2449/6286/files/fitbit_alta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8581/4177/files/fojugumefajobunike.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1005/6615/files/soluwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8513/5014/files/tamil_sex_story.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6109/2255/files/80769514089.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4556/0219/files/gunixovew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1540/4702/files/anderson_multivariate_statistics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9847/0555/files/international_cricket_score_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/nbme_cbse_remembered_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5827/5238/files/17616524127.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2681/6932/files/44883139818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5643/8165/files/11842792583.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5035/1257/files/brualdi_combinatorics.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 5

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_off00008cfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CFB 5336 bytes
SHA-256: 9273e753937567348725bd7cce1c00ae0125cb95567ad26217223395469e2ca6
font_01_sfnt_off00009f29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F29 14816 bytes
SHA-256: 9b48f1a218a6747fc332e353cb6a1b28151abc18fc60d85c3b4e0c2ce692578c

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