Malicious PDF — malware analysis report

Static analysis result for SHA-256 10878c69d11863e3…

MALICIOUS

PDF

45.2 KB Created: 2020-08-06 06:05:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b35d2cd4cb708d14305303b72e9c990a SHA-1: 0ff0fc135636f5a498fc4a2691d032ec79eb6877 SHA-256: 10878c69d11863e3b67a6c0366a9daac2ba00ca38cbcc0acf87a82e53234a30e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains multiple links to external resources, including a redirector URL that points to a lure for downloading free German learning materials. The presence of numerous PDF links suggests a link farm or SEO manipulation tactic to drive traffic to potentially malicious content. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or content-luring attack.

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=apprendre+allemand+pdf+gratuit In PDF document text
    • http://files.mountainmayhemfireworks.com/uploads/1/3/0/8/130814129/6407935.pdfIn PDF document text
    • http://files.elisabethmartorell.com/uploads/1/3/0/7/130739971/zizaju-bisulagujozexed-firapu-zajebezeligoze.pdfIn PDF document text
    • http://saruxomoz.beansplaybox.com/uploads/1/3/0/8/130813612/1898351.pdfIn PDF document text
    • http://files.hannahhsieh.com/uploads/1/3/2/6/132682048/5880612.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/1/0431/7567/4024/files/dedodolal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4243/8310/files/62283011865.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1590/5185/files/tugezaxijadolel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9989/8531/files/iphone_6_plus_user_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8850/2174/files/56913252836.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2511/1972/files/58522491177.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2011/6387/files/978118298.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9087/0423/files/58081524937.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9163/9966/files/rutokikoju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6895/6565/files/40665977729.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3027/3448/files/giludu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3761/3461/files/midajusoxoruxavixanefiwob.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_off00006fb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FB8 5172 bytes
SHA-256: e37d0540ce59821dee23709925055c7ea0eddbc2dcc600f06e69e885de4928ed
font_01_sfnt_off00008142.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8142 12148 bytes
SHA-256: 219fa9a0cca4cce3c4eb9c7a6b32bfed648a28f1942174520d3b073c5891da46

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