Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b164fe5615ba215…

MALICIOUS

PDF

43.7 KB Created: 2020-08-09 20:52:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bb9f626dc8305cfed264fe549f2a9f34 SHA-1: 111ff648a120dc6f7c76850e09951fdae442466b SHA-256: 7b164fe5615ba21539fa85277af70aadac305faa6709eb641ddc67040cf381a0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external resources, many of which point to a redirector service (ttraff.com) disguised as a free PDF download. This indicates a likely attempt to lure users to malicious infrastructure for phishing or malware distribution. The ML classifier also strongly flagged this PDF as malicious.

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.com/pify?keyword=definition+of+information+and+communication+technology+pdf In PDF document text
    • http://files.bluelanternstore.com/uploads/1/3/0/7/130739754/6238760.pdfIn PDF document text
    • http://wibik.mytechiebuddy.com/uploads/1/3/1/4/131453133/gesatabonemiwaka.pdfIn PDF document text
    • http://files.thanyagolf.com/uploads/1/3/0/8/130874514/toditajarifaw.pdfIn PDF document text
    • http://files.mobyarchitecture.com.au/uploads/1/3/1/6/131606630/7951763.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/1/0433/0687/7080/files/3294478915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4996/6998/files/23746886327.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5034/4352/files/53353332797.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9647/3749/files/livecd_windows_7.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8474/1798/files/fotoguderudepe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6640/9639/files/85953272297.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3952/1959/files/vofufovom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5804/4827/files/rovivumigo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3998/0711/files/47428485454.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 4

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_off00006b46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B46 5492 bytes
SHA-256: 8768128544aa59d69059eee0f938031ae96640043ab0b660f4cded946d6eabca
font_01_sfnt_off00007de0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DE0 10504 bytes
SHA-256: 137464692d652b4e1085e6e5e6298abdc173d3269556d955f2aaa33abafe2898

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