Malicious PDF — malware analysis report

Static analysis result for SHA-256 871015c0d494a0f1…

MALICIOUS

PDF

33.8 KB Created: 2020-08-14 08:49:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f265e1bf719f660e418f79c983cd3e0d SHA-1: 373b501e6868c9b47994b7326dfd7076d66097d6 SHA-256: 871015c0d494a0f10d8903aaa1f819df5238ad99102fdd19430cd767ffdf9143
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one to a known malicious redirector at `ttraff.com`. This redirector is likely used to obscure the final destination and deliver a malicious payload. The presence of a link farm suggests an attempt to manipulate search engine results for phishing purposes. The ML classifier strongly indicates maliciousness.

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=murray%20mower%20parts%20manual In PDF document text
    • http://files.enebcorp.net/uploads/1/3/2/6/132681647/5278861.pdfIn PDF document text
    • http://files.alejandrogonzalezmolina.com/uploads/1/3/1/4/131437423/fajuposor.pdfIn PDF document text
    • http://files.nplservicesinc.com/uploads/1/3/0/7/130740318/b4a5f51a6.pdfIn PDF document text
    • http://faripid.bigbearsartstudio.com/uploads/1/3/0/8/130814310/lonegigew_serodorupet_xereletexaxarib.pdfIn PDF document text
    • http://foxebowa.yorktownlionsclub.com/uploads/1/3/0/7/130739826/muvex.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/1/0433/8640/5022/files/62917215865.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2136/8482/files/bufejisoku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8699/3813/files/manual_accounting_system_vs_computerized_accounting_system.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9350/8771/files/21766395853.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5681/6540/files/faxad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6785/0390/files/lisep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0501/7249/files/jinutotulizikisufu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2816/0420/files/10487004179.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6579/4965/files/42588196523.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3489/1672/files/blood_type_a_positive_diet_plan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38138836364.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 4

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_off00004900.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4900 5164 bytes
SHA-256: 74eb9ff2744aa09447456b84291eced70f1cdb0538b85b537cc746aafe34a5bb
font_01_sfnt_off00005a96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A96 9348 bytes
SHA-256: ed21ae84589b8a62d6782056305b2bebed7933116523975bd807ef65a00955f9

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