Malicious PDF — malware analysis report

Static analysis result for SHA-256 0adc835beea67036…

MALICIOUS

PDF

36.7 KB Created: 2020-08-13 07:57:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 62fd5a547a5e8e37f96c55dd1c11020d SHA-1: e349d52921e50d1b9bce4d2cc887d938e122b48c SHA-256: 0adc835beea6703693961acd61326ba7fb633e3aecab0a5176fde7c31c8e0b4a
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.cc) which is flagged as malicious. This redirector is used in conjunction with SEO-like PDF filenames to lure users into downloading what is presented as a technical handbook, but likely leads to a malicious payload. The ML classifier strongly indicates maliciousness, and the overall structure suggests a phishing or malware distribution scheme.

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.cc/pify?keyword=ashrae+applications+handbook+2020+pdf In PDF document text
    • http://files.mikeysbarbershopla.com/uploads/1/3/0/8/130874324/munikarap.pdfIn PDF document text
    • http://files.waldencoffeehouse.com/uploads/1/3/0/8/130874520/xobosafa.pdfIn PDF document text
    • http://files.bigdoglabradoodles.com/uploads/1/3/0/8/130814652/xagoxizuvalebiw.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/1/0429/5488/3231/files/68980762626.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1279/2221/files/kopavexijixesidaniko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/2425/5898/files/lefemarivapolev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2351/6323/files/65876552149.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2067/3433/files/41427712569.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/3108/0605/files/bohat_tta_rad_jak_investovat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9476/0862/files/69989088895.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0413/3525/files/tooth_brushing_techniques.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5055/7855/files/82557666419.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/43382574527.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3422/9398/files/supepozepa.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_off00005014.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5014 5708 bytes
SHA-256: d938bfab9427226cfc962e61ddd9eab3033b50c293be67086a110e633da5fd68
font_01_sfnt_off00006370.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6370 10528 bytes
SHA-256: 2641dbf68e405e80d81c16c2390ed371648fe459686eff22982d977eae292898

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