Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5503e6e5184ee41…

MALICIOUS

PDF

280.4 KB Created: 2020-08-14 11:14:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9a5370e229abda6a2bb11b06c14596f8 SHA-1: 82c05cac848ef9df64717ea77fc3d67c08abac75 SHA-256: f5503e6e5184ee41730f18d7971e93af499f8c1524c703e6fbfd59203b96ad92
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/pify?keyword=format+of+absorption+costing+income+statement`. This URL is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine the exact lure beyond the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • 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.
  • 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=format+of+absorption+costing+income+statement In PDF document text
    • http://kepozamug.supervisedvisitations.net/uploads/1/3/2/8/132814930/22b23f548.pdfIn PDF document text
    • http://files.jozibestwomensclinic.com/uploads/1/3/1/8/131871586/d420d8e.pdfIn PDF document text
    • http://files.princetonuniversityband.com/uploads/1/3/1/4/131455636/09a61e7702867.pdfIn PDF document text
    • http://files.jacksonartwear.com/uploads/1/3/1/3/131381374/a5a868920284c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8029/5334/files/26350821058.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8611/7019/files/riketotadideporetek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9417/2058/files/letajejiliniwugur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8561/0654/files/isometric_dot_sheet_a4_size.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5275/9200/files/83290538764.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9867/6131/files/50945091239.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1720/6946/files/39271720572.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2943/8370/files/67440206273.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8607/8369/files/bejodipexapawagoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9778/3458/files/jurixidexijepev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0765/4563/files/speak_now_1.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000402f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x402F6 5184 bytes
SHA-256: 51f98b57c171d3b26a6e4daf536c1ecc9a6cebbf606db17031256920c01d3a07
font_01_sfnt_off00041474.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x41474 15512 bytes
SHA-256: 4ba0935d0d9cf9126d18935ef99937507a567024dd397eb6a7cf96908969917c
font_02_sfnt_off000444a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x444A5 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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