Malicious PDF — malware analysis report

Static analysis result for SHA-256 8590191c14c4411e…

MALICIOUS

PDF

42.9 KB Created: 2020-08-19 10:07:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2cfc4d54bb208e264e69e9062e57aec1 SHA-1: d25ce2e6a09bf7e663026c2829b3f8156349fbaf SHA-256: 8590191c14c4411ec0db21324e0045d15f2344691527ed27c2451ff85ae86b91
194 Risk Score

Malware Insights

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

The PDF document contains multiple embedded links, with a primary redirector pointing to 'https://ttraff.ru/pify?keyword=iphone+message+answered+on+another+device'. This infrastructure is flagged as malicious and used in SEO link farms, suggesting a phishing or scam lure. The document body, though partially corrupted, also contains this URL, reinforcing the malicious intent. The ML classifier strongly supports the malicious verdict.

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=iphone+message+answered+on+another+device In PDF document text
    • http://files.deltafireprotection.com/uploads/1/3/0/9/130969003/381601.pdfIn PDF document text
    • http://files.movimientomexicano2018.org/uploads/1/3/2/3/132302939/498eac1358.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3333/7768/files/1305960408.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7387/2807/files/jurun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5633/9871/files/74269575559.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/3287/4901/files/agilent_33220a_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6287/6565/files/wogizawezanenabiga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7220/0608/files/xemepefixokuvajezateg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2544/0669/files/45610808399.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9784/1054/files/giranofipukupexutapumalik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/4458/0002/files/argas_persicus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3060/9063/files/capablanca_endgame_book.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B0C 5332 bytes
SHA-256: 85efac910c1b67c48a207b5a15613b180a3f1f5230927536125fb0f4a4fbaf35
font_01_sfnt_off00006d0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D0A 10528 bytes
SHA-256: 96c110c3153b86446479fd644ebd915bbcf6dcb4bf64482e9b9208390b6bccbc
font_02_sfnt_off000090ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90AE 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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