Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b6b3a4c4439ca9c…

MALICIOUS

PDF

43.8 KB Created: 2020-08-23 02:17:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 409a517dead754053e3df26927105365 SHA-1: 871826f5336fc0c14c4ec94934aed48cdfb58377 SHA-256: 1b6b3a4c4439ca9cff6b78f5b3279bd4511ad58df62e3b938a38cfdb48aec5dc
170 Risk Score

Malware Insights

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

The PDF file contains a high number of embedded links, many of which point to a redirector service (ttraff.com) that is known to host malicious content. The document body also contains a call-to-action phrase and a direct link to a potentially unwanted application, suggesting a lure to download software. The presence of numerous external links, many hosted on Shopify, indicates a link farm strategy to improve search engine visibility for the malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=vidmate+apk++install+pc+free In PDF document text
    • http://files.schillingmediainc.com/uploads/1/3/1/4/131406075/8051944.pdfIn PDF document text
    • http://kirar.spotlight-video.net/uploads/1/3/0/7/130739615/6052199.pdfIn PDF document text
    • http://vekel.stfrancisabilene.com/uploads/1/3/0/7/130776049/kuzowipiw.pdfIn PDF document text
    • http://tuwini.whiteterns.org/uploads/1/3/0/9/130969204/a40ba8ead.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/1/0430/9480/2593/files/32882523033.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5812/7270/files/sslc_physics_model_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4940/9960/files/contoh_soal_siklus_akuntansi_perusahaan_jasa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9969/0910/files/creative_writing_assignments_for_middle_school.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6348/4315/files/jokuvebol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1578/2045/files/18816273818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8185/0268/files/craftsman_air_compressor_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2172/2015/files/pressure_vessel_design_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/riduzojivoxunum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9074/7295/files/51061039967.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8309/5459/files/63773521509.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6356/5718/files/misapu.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 5

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_off00006cf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CF8 5332 bytes
SHA-256: a09ca7619633d03c54ff87ee862cd7c02a0e769fe7ae2a04da00761382cea2eb
font_01_sfnt_off00007f03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F03 10420 bytes
SHA-256: 97f2a4ebcc11289ab3c540170dc418943cd70189095a1e2e00973f923c56e6de

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