Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c47013d959c20df…

MALICIOUS

PDF

40.4 KB Created: 2020-08-21 01:02:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6bb2b9609a7f30c0c264fc4eb29d964e SHA-1: b8f2284e3d1646185f86eefdeb3e99c58ba19efc SHA-256: 9c47013d959c20df8e8f0f89d7bb60e01fc0f422233116a299d504998c21a915
162 Risk Score

Malware Insights

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

The PDF document contains a lure related to a "Bkash app offer" and embeds a critical link to a known malicious redirector at https://ttraff.ru/pify?keyword=bkash+app++offer. This indicates a phishing or scam attempt designed to redirect users to malicious infrastructure. The PDF also contains a large number of embedded links, many pointing to benign Shopify URLs, but the presence of the malicious redirector is the primary indicator of compromise.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=bkash+app++offer In PDF document text
    • http://files.zaratelabs.com/uploads/1/3/1/6/131636941/votow_niwuf_wevofonugan.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/1/0431/5106/5243/files/tina_turner_acid_queen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5313/7570/files/sagukeragufulatatelesi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5851/1510/files/ultrastructure_de_la_cellule_vegetale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7173/3917/files/47679528854.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2344/0792/files/sodium_metabisulfite_in_food.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2060/7900/files/carreteras_secundarias_libro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7709/9935/files/bowopomagapopij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2267/2284/files/cpt_code_99203_fact_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1614/2497/files/67729479986.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9600/7065/files/25693095579.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5562/1031/files/64112206080.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/0479/2729/files/english_grammar_rules_and_usage.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A36 5068 bytes
SHA-256: 22110c813790f87422d691bc5388fb80bf784763a7199109d39bb4a3d8642e33
font_01_sfnt_off00006b73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B73 13028 bytes
SHA-256: 41a38dfe8c6ed9742acc1336b2dc9137f2a7c706171612c9eaeb2701a19ef129

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