Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b5a77d2ed9600b8…

MALICIOUS

PDF

49.6 KB Created: 2020-08-18 14:08:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 973bbf08b1e400a7d2a29bea0c205fc3 SHA-1: 818c4935225b67d01708e3f8d1f7c19b6ffd0010 SHA-256: 7b5a77d2ed9600b8d18c5f1f06b7b082409158648d65746102e1f000aa34b602
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.com) that is flagged as malicious. The document body, though heavily obfuscated, contains a reference to the same malicious URL. This indicates a phishing or scam attempt, likely using a link farm to distribute malicious content.

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=android+studio+default+jdk+location In PDF document text
    • http://files.easternshorechess.com/uploads/1/3/1/4/131483584/pekizureb_zabixi_mapof_menuk.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/1/0428/4294/7750/files/17856995862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5082/6919/files/16554095578.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1220/9315/files/the_nice_guys_putlockers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5969/2191/files/precis_writing_book_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2429/3796/files/45343527675.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8297/3346/files/48160131553.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7939/1646/files/chimie_anorganica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6045/9685/files/familia_y_embarazo_adolescente.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6820/2901/files/47124938186.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9923/5228/files/setting_business_goals_worksheet.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_off00008382.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8382 5144 bytes
SHA-256: 75e258393e670dcac51d0d83b54719122b4484278cd330f703ad469fc05875a2
font_01_sfnt_off0000950f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x950F 10604 bytes
SHA-256: ab93b589a1b48585ce2caeb166f7b3063a0394ae9a6c48f759d74ded60ab82aa

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