Malicious PDF — malware analysis report

Static analysis result for SHA-256 9522f8d6cdf20882…

MALICIOUS

PDF

47.1 KB Created: 2020-07-29 03:34:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7cacc0a1384dc591c97fccc6eedfca9a SHA-1: 85b836b32bc49ab93e7e1475249494e3e4452a78 SHA-256: 9522f8d6cdf20882e04d6a0e34012af3e59a0c81285b4211b32753ee4849155e
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically `https://ttraff.ru/pify?keyword=payroll+system+flowchart+pdf`. It also exhibits characteristics of a PDF link farm, with numerous embedded URLs pointing to external PDF files, many hosted on Shopify. The document body, though heavily obfuscated, suggests a lure related to a 'payroll system flowchart'. The primary attack vector appears to be social engineering via a malicious link disguised within a seemingly innocuous document.

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=payroll+system+flowchart+pdf In PDF document text
    • http://files.kafyeblaan.com/uploads/1/3/1/8/131856381/becb5.pdfIn PDF document text
    • http://files.mindbodyevolution.org/uploads/1/3/0/7/130775633/8153035.pdfIn PDF document text
    • http://files.johnreesleather.com/uploads/1/3/1/6/131637658/f394e2.pdfIn PDF document text
    • http://files.langeamchs.com/uploads/1/3/1/4/131411539/xinilixoguvovaj-jepatidoratodab-gilaxepag.pdfIn PDF document text
    • http://files.frankmarcopolos.com/uploads/1/3/2/7/132710797/fimulu-resemogus-gevenanivuxeze.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/1/0432/6585/1542/files/56744873293.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3458/0891/files/fimawojomifanefufidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7940/1623/files/12962425533.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5820/8674/files/60386608241.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4671/5040/files/26282349480.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2351/5294/files/99154844580.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5575/9011/files/42263856378.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9776/6553/files/vemapasutamojes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1023/6321/files/xovejukirumila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/rezupinipobevuzeguzimi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5419/4070/files/51581633960.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1574/0312/files/4497635839.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 8

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_off00007bc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BC5 5224 bytes
SHA-256: 8268e6c2735683269cdd42dd7e7ed84fea6e7e29ebd20e70ac9731726e555cf0
font_01_sfnt_off00008da7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DA7 9928 bytes
SHA-256: 2684c9c63f3e881a22e1908aca2bbfe221946c53be6a3064863b1e7885cc0452

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