Malicious PDF — malware analysis report

Static analysis result for SHA-256 50dce135675f563c…

MALICIOUS

PDF

53.0 KB Created: 2020-08-17 05:42:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 32108530db5c47040771cc7803750a05 SHA-1: d705abd269e9a0eb30be7dc1ae05310ab53888ee SHA-256: 50dce135675f563c881c2cbdeb3c1e9f42ee3fe96af716f9afbd958ee7d73601
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains embedded links that redirect to a link farm hosted on ttraff.com, which in turn points to numerous other PDFs. This behavior is indicative of a phishing or malicious redirection scheme. The ML classifier strongly supports the malicious nature of this PDF. No scripts were extracted, limiting the analysis of direct payload delivery.

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=kolkata+city+road+map+pdf In PDF document text
    • http://files.akpsipsu.com/uploads/1/3/2/6/132681579/wadojemak.pdfIn PDF document text
    • http://pomopif.robertconroybooks.com/uploads/1/3/1/3/131383664/jonoporugedupex.pdfIn PDF document text
    • http://files.soniaamayoga.com/uploads/1/3/1/4/131407547/jizexokusegida_famete_tifipi_tiwiwufutirozu.pdfIn PDF document text
    • http://files.yungschinese.com/uploads/1/3/1/0/131070173/xebofimuzozoto.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/1/0428/7974/6201/files/zotofibozukudemizem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0253/5840/files/48714134752.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5744/6038/files/9513978907.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2905/9992/files/89094326630.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4463/3750/files/vuluniwaxokololo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1100/4821/files/jijujaposulevijij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3526/1085/files/subreddit_list_5000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6459/7397/files/sexerizufabexirane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7241/2055/files/fivugefamimafuku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5497/9477/files/air_conditioner_repair_training.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5333/5207/files/48039318143.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6001/7814/files/gobimesimazewolufav.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_off00009248.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9248 5260 bytes
SHA-256: 4f0b6502c58887be27eb1869ab4d75712df02ab81fc3d02eaf40f0d705bf558a
font_01_sfnt_off0000a419.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA419 10748 bytes
SHA-256: 80c53dda2a232e98788c2735e43e8560d9a003f12564b3e079634f204b2d1330

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