Malicious PDF — malware analysis report

Static analysis result for SHA-256 73c772fd4c73853c…

MALICIOUS

PDF

97.8 KB Created: 2020-08-25 03:43:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fc65ef6a61b44f719df248001f0f1f6a SHA-1: f6d9bf6f7d611d05b1ccc79fe4c73418e945c37f SHA-256: 73c772fd4c73853c0c42144227ddfb09468413c27c7107741cd93cfe0a3c49ee
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to a redirector service (ttraff.com) which is flagged as malicious. The document body, though heavily obfuscated, contains the same redirector URL. This suggests the primary purpose is to redirect users to malicious content, likely for phishing or malware delivery. No scripts were extracted, but the presence of numerous links and the malicious redirector strongly indicate a malicious intent.

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=tuning+pid+controller+pdf In PDF document text
    • http://files.joshyblog.com/uploads/1/3/2/3/132303219/wukefas.pdfIn PDF document text
    • http://files.pricevillefire.com/uploads/1/3/2/6/132695932/bde8b87b16f0.pdfIn PDF document text
    • http://files.mactire.ie/uploads/1/3/2/6/132695190/2766841.pdfIn PDF document text
    • http://files.donnaclarkteacherportfolio.com/uploads/1/3/2/6/132683181/ed5ef0f609fad56.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/1/0428/5048/4390/files/calendario_di_serie_a_2020_19.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2531/8563/files/5171452226.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1455/3763/files/6434236562.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2804/6233/files/93131195275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2614/3639/files/logufolupew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4900/7769/files/75023377126.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/6225/8851/files/elementary_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3017/4101/files/partnership_firm_agreement_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2665/3077/files/13926374521.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012382.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12382 4884 bytes
SHA-256: 9817dc2c99ae234f39bb1a455970b6e20f3606616167a69a84ad922c500b3402
font_01_sfnt_off00013428.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13428 15320 bytes
SHA-256: caf63edb0287f368c59c8b3d5e51827614052e7435abf377561be5195466f98c
font_02_sfnt_off00016534.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16534 16140 bytes
SHA-256: e519f4e4ac6d9b0f57dce0c0d49b484e4d1d842646fa75230b4829220ba81c73

Open this report in the interactive analyzer, or submit your own file for analysis.