Malicious PDF — malware analysis report

Static analysis result for SHA-256 e891fd43d053a031…

MALICIOUS

PDF

42.5 KB Created: 2020-08-21 05:00:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 84ee42f85d9e9fd59e4c692dd6da13f4 SHA-1: f2b753a48ab1f7daa5901eecd69d6e337c58f3e0 SHA-256: e891fd43d053a0319f968aece07406dab2e0d938b689343db56dae11e468e9ec
162 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.cc/pify?keyword=chrome+application++for+laptop'. This URL is likely part of a phishing or malware distribution chain. The document also exhibits characteristics of a link farm, with numerous embedded links to PDF files, many hosted on Shopify. The document body, though heavily obfuscated, contains the same suspicious URL and mentions 'Chrome application for laptop', reinforcing the lure.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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.cc/pify?keyword=chrome+application++for+laptop In PDF document text
    • http://files.elawithmsionut.com/uploads/1/3/0/7/130775808/nepuribuselimurewu.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/1/0431/0725/4439/files/lawson_s_landing_fishing_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1382/3909/files/fijeku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7994/0761/files/72988312635.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9780/8285/files/29794362151.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/7039/8110/files/wajenasogupabizofodiket.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6753/9623/files/44573736854.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7753/2822/files/accomplishment_report_intramurals.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/8277/9541/files/17650338288.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0741/8273/files/negotedojedokuzedu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1172/6750/files/cavalier_coke_machine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7846/7238/files/patient_consent_form_for_case_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3276/3801/files/83519998245.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1626/3592/files/12631384678.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1583/8618/files/ripiwoxo.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 2

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_off0000672c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x672C 4980 bytes
SHA-256: 71d346b93eb2010fdd2a75f88d3d6e3f529b62d56a4dbbf28da269062c45521f
font_01_sfnt_off000077f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77F5 10896 bytes
SHA-256: 85b9e8d38a1c13cd87e632184d4107e88d32968836ee3795fb0377f5de24f8ce

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