Malicious PDF — malware analysis report

Static analysis result for SHA-256 190b856180f53505…

MALICIOUS

PDF

48.8 KB Created: 2020-08-03 03:38:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1c725b68b722f0644240cbd629df5119 SHA-1: f40279f8ab171b90f3f7834d45974e519e7d372c SHA-256: 190b856180f53505ba9eab5d7bc7455cb5b54a57fcf498bc5cf03c45a2883a7d
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at `ttraff.ru`. This redirector is likely used to obscure the final malicious destination, which could be a phishing page or a malware download. The presence of many links, some disguised as PDF documents on Shopify domains, suggests a link farm or SEO poisoning tactic to attract victims. The ML classifier also strongly indicated maliciousness.

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=c+hash+table+implementation In PDF document text
    • http://files.cheerproathletics.com/uploads/1/3/1/8/131856827/gamifalesopa.pdfIn PDF document text
    • http://files.hocrane.com/uploads/1/3/0/8/130814652/matawuwovi_guridof.pdfIn PDF document text
    • http://files.fenwaywestfield.com/uploads/1/3/2/7/132740350/5077484.pdfIn PDF document text
    • http://files.spearfishspartanwrestling.com/uploads/1/3/1/3/131381414/822423.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/1/0429/2732/5343/files/91772188755.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8777/4374/files/xoribasuwoke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0188/8416/files/datifulumologekojaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2745/5400/files/talidimakujonexixolo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9946/4611/files/47038885649.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1536/5031/files/wiragazirugitinuriwuvi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9544/8988/files/stardew_valley_path.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6403/3429/files/11925323780.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1926/3397/files/9859382866.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4017/7317/files/56731704608.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1717/3149/files/gubemobolizinezaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2897/1681/files/zumajosaxetizoxiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7410/8057/files/woxusoraloxef.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_off00007426.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7426 5008 bytes
SHA-256: ceed1acabe66e863e64f706c597d86aef9d636174b9dfc19428faadaa892ccf6
font_01_sfnt_off000084ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84FF 15644 bytes
SHA-256: 7ff9dcff0220a74d23d9365fa22eaa5ce340602fa342e292381efa8007368af1

Open this report in the interactive analyzer, or submit your own file for analysis.