Malicious PDF — malware analysis report

Static analysis result for SHA-256 41dd1bb0caa1e926…

MALICIOUS

PDF

54.7 KB Created: 2020-08-18 15:48:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bcce3bb78dcbd406225c24824d948421 SHA-1: 63b26e4fe2a97a096d47a06264248abee3b191f4 SHA-256: 41dd1bb0caa1e926b6626f2e3a5832003b1a088e308917e12eae65ff0c0e7591
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure. The document body, though heavily obfuscated, contains a URL that matches the redirector found in the heuristic. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, suggesting a broad phishing or SEO poisoning campaign. No scripts were extracted from this sample.

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.ru/pify?keyword=dispensing+guidelines+in+a+medical+practice In PDF document text
    • http://files.la-iphonerepair.com/uploads/1/3/2/8/132816096/fizev-sisif-fimat.pdfIn PDF document text
    • http://files.maplephoenix.com/uploads/1/3/2/6/132681767/kuvokabow_bewosukoses_nufojaluvumoz_sifobori.pdfIn PDF document text
    • http://files.laisletabikini.com/uploads/1/3/2/7/132712209/fb488a2d6.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/1/0430/0367/4785/files/44613569641.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5497/3606/files/wodasa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0174/1463/files/mugugokulisipilekikuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2664/4125/files/6081618616.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5495/5672/files/21322228925.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5104/7329/files/functional_areas_of_business_organization.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6811/3574/files/download_from_dailymotion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0866/2440/files/aadhar_card_form_in_gujarati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8556/8925/files/duvuvitamuladejol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5809/4495/files/bijinufigawejumamujevido.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85947343199.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9885/6871/files/asme_section_viii_division_1_radiography_acceptance_criteria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2161/5775/files/vufolufa.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_off00009767.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9767 5392 bytes
SHA-256: 7e2f26ea00a7bf4681f5d8f92377dca0f2633d1bac75539355789effe3c76afb
font_01_sfnt_off0000a9a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA9A1 10488 bytes
SHA-256: 0bce9f425ba6302183c2a05349af903691b108ad86ec8158681b66450e0c8f96

Open this report in the interactive analyzer, or submit your own file for analysis.