Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ba3e8dfca3d3247…

MALICIOUS

PDF

50.8 KB Created: 2020-08-13 15:41:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 715874e459e8d395571a34ad9813e4b5 SHA-1: 2ebcd32dcbd71c716030b70c8a702f32d6bff632 SHA-256: 1ba3e8dfca3d32471cafd5cc9807813c4de77ddca74a93ae9b3032b4624dc8d6
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF file contains a large number of embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains references to the malicious URL and benign-looking PDF filenames, suggesting a link farm or SEO poisoning tactic. The primary malicious URL is https://ttraff.ru/pify?keyword=bulaklak+ng+lahing+kalinis+linisan+pdf, which is likely used to redirect users to further malicious content. No scripts were extracted from this sample.

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=bulaklak+ng+lahing+kalinis+linisan+pdf In PDF document text
    • http://subex.thutupallilab.com/uploads/1/3/0/8/130814328/4629852.pdfIn PDF document text
    • http://files.sportsfactory.shop/uploads/1/3/1/3/131383964/tijodojalureruzijaxu.pdfIn PDF document text
    • http://wezug.mrelectrician.co.nz/uploads/1/3/0/9/130969723/8829611.pdfIn PDF document text
    • http://xudef.lewissportsacademy.com/uploads/1/3/1/3/131382274/dumuwijonatiji_lexafasudo_gosadujopoz.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/1/0437/4636/1505/files/hanuman_bajana_songs_telugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7577/1304/files/68557787938.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/tsp_3_fillable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3953/8851/files/gmail_login_screen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/77636621448.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4903/3640/files/12896183713.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1682/2679/files/general_motors_logo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7386/2821/files/teweregimojinakuboruvo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8570/1019/files/vovodajaburefulagefenite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6989/7878/files/jozurusumures.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7723/7917/files/63514461844.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9813/5966/files/84614775048.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0158/5570/files/gafikagisixise.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 3

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_off00008710.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8710 5320 bytes
SHA-256: 4c5b96df28373a8cbbd6b2a49cc53e91871f80e344914bcf250ef2a1f97a7636
font_01_sfnt_off00009926.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9926 11244 bytes
SHA-256: e40c1a64880d8b4df63d773100589eae81f818e10160ae88b4e379f54774ca7c

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