Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b1e4c9bc8105b7b…

MALICIOUS

PDF

42.0 KB Created: 2020-08-22 19:45:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 185b7de9bd9ba9100f75a67a53d637b5 SHA-1: f9d76c0b1f56a5d7ce6e74770fc00e1c21162468 SHA-256: 6b1e4c9bc8105b7bab0420f0590a52fe4769b995fc932e9d11e5ca747a6ec45c
162 Risk Score

Malware Insights

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

The PDF contains numerous links, with a primary redirector pointing to a URL that appears to be part of a link farm or SEO manipulation scheme. The ML classifier strongly indicated maliciousness, and the presence of a malicious redirector URL suggests an attempt to lead the user to a harmful site. No scripts were extracted, but the document's structure and embedded links indicate a social engineering attempt to drive traffic to malicious infrastructure.

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=android+apps++but+don%2527+t+install In PDF document text
    • http://files.redrootacupuncture.com/uploads/1/3/1/3/131383483/risesujefolusawo.pdfIn PDF document text
    • http://xepudu.thesouthernsheshed.com/uploads/1/3/0/7/130739873/799e55.pdfIn PDF document text
    • http://tidorulan.echoecological.com/uploads/1/3/0/7/130739826/3407408.pdfIn PDF document text
    • http://rekow.slayingwithdice.com/uploads/1/3/1/4/131407057/wedijudolijez_tibobixufar_tugonusos.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/1/0431/5021/3274/files/36065059457.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/0642/2184/files/bogasolumumaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2824/0794/files/oregon_driver_s_license_number_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0574/7108/files/32788467528.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1490/6275/files/60946831495.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3889/1419/files/97275242267.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0489/5143/files/20585680366.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7315/8821/files/pofakisolifoduw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6302/5567/files/batexobo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3111/7467/files/88943577150.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_off0000662d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x662D 5116 bytes
SHA-256: bc93ae85ac6ecc366ea6b7efe1b1c72cb936164e33b06705b18832f300c2ffaf
font_01_sfnt_off00007798.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7798 10420 bytes
SHA-256: e4fee4da8dce740a18981933ddb0617156d2eadabb10c64c3947fcefb8dbeb84

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