Malicious PDF — malware analysis report

Static analysis result for SHA-256 550517e0894185b1…

MALICIOUS

PDF

47.1 KB Created: 2020-08-04 20:17:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1ab3387a88c227d8a0cef8adb3ac87fa SHA-1: c40ca83133751479b47176288b8e15344fce525a SHA-256: 550517e0894185b1bbb7c3a7074e82e64f42c8e234650c9d0ff8e43f42600ed8
194 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by a machine learning classifier and contains a large number of embedded links, including one pointing to a known malicious redirector at `ttraff.com`. The document body, though heavily obfuscated, also contains this URL. The presence of numerous external links suggests a link farm or redirection strategy to distribute malicious content.

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=animal+farm+test+review+pdf In PDF document text
    • http://files.chesterknits.com/uploads/1/3/1/3/131383478/lemojunugizuvofux.pdfIn PDF document text
    • http://files.nothingeasylifestyle.com/uploads/1/3/1/8/131872198/wogukopubipetiwefa.pdfIn PDF document text
    • http://files.relaxandsucceed.net/uploads/1/3/0/7/130738841/0e02368c.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/1/0450/6284/8664/files/saints_row_characters.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9552/3485/files/78701400230.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5525/9546/files/subipedobesomakasif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6985/7176/files/96824987561.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8512/8090/files/17581155156.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8807/7209/files/golewunoperaxalos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7469/6856/files/voveruxolezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8052/4710/files/zafajokifoxofovaledawix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1645/4305/files/61133851670.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6150/2362/files/cape_town_dam_levels.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9415/5170/files/d_d_4e_dungeon_delve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8561/7570/files/alexandria_egypt_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3070/7356/files/norezolukekotaninazov.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 6

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_off0000792c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x792C 5328 bytes
SHA-256: 67897af281c787a0c4e73dad846e3ef726cb6c739919485258b4c0cdbe777e9c
font_01_sfnt_off00008b48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B48 10412 bytes
SHA-256: 71c2f8a89dd0ee46214954f46566f2265d48bb11911082319b7e53e98a25aa0b

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