Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd051fb150fdfdaa…

MALICIOUS

PDF

41.9 KB Created: 2020-08-19 02:41:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 26f928784b5b52d69e6104b5d836976d SHA-1: 5f8effc03970d845f5959fccd554063d42a39be7 SHA-256: bd051fb150fdfdaab037738f777a629d0ba0bc0f8d0db1e99852dc34667496be
162 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=bholanath+song++2019'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The ML classifier also strongly indicated maliciousness. The document body contains garbled text but includes the malicious URL and several benign-looking PDF links, suggesting a lure to obscure the malicious intent. No scripts were extracted, but the primary attack vector appears to be the malicious redirector.

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.com/pify?keyword=bholanath+song++2019 In PDF document text
    • http://files.cattongrovecentre.org/uploads/1/3/1/4/131438111/newujudisaburul-pusulu-sapirixup.pdfIn PDF document text
    • http://files.atyourservicelimosjax.com/uploads/1/3/1/4/131406222/d73cef554.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/1/0432/5454/6590/files/paxobatizekugizituvavad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2710/1853/files/82183680909.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/65792718313.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3282/1412/files/break_even_analysis_cost_accounting.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2330/9727/files/preposition_of_place_worksheets_for_grade_4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4896/7063/files/lp_basalioma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5498/0505/files/33452596807.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4011/1782/files/isis_unveiled_helena_blavatsky.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3664/7317/files/litutametemetenosexewurog.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 7

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_off000058f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58F4 5380 bytes
SHA-256: e33f766358dc47418b2004031b4ea8cf6462cfaef029803d6924fa05c4d24056
font_01_sfnt_off00006b3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B3E 14840 bytes
SHA-256: 9a9db1566851f35ccb17003cb5da118ddd68e9a5bfeec31f91674cd0e7e8a34e

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