Malicious PDF — malware analysis report

Static analysis result for SHA-256 754411302526cc89…

MALICIOUS

PDF

41.2 KB Created: 2020-08-09 17:48:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fe7f039cd6508dabadfa9e9f67a9faf6 SHA-1: f1ea6f0410d12458b3df6ff522b0381bc125b8b7 SHA-256: 754411302526cc89c0c963e1f61245f694c77b0772f9d516fbf6854c2547a9ee
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) that is flagged as malicious. The document body, though heavily obfuscated, contains text suggesting a 'search inside a pdf document' lure, which is consistent with the heuristic firings indicating a link farm and redirector abuse for SEO-based phishing. The ML classifier also strongly indicated maliciousness.

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=search+inside+a+pdf+document In PDF document text
    • http://files.theallergyfreezone.com/uploads/1/3/0/7/130740141/1634782.pdfIn PDF document text
    • http://files.littleislandrusticresort.com/uploads/1/3/2/7/132740285/kimudisoxoru.pdfIn PDF document text
    • http://files.cabrillochorus.org/uploads/1/3/1/3/131383533/vijure.pdfIn PDF document text
    • http://files.hmsfitness.net/uploads/1/3/2/3/132303151/nofuxet.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/1/0431/2816/0420/files/xuxulan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71860998709.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0354/3715/files/11936156862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0084/5720/files/70533840920.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8955/9705/files/html5_interview_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6713/0534/files/kekosuluxodagepumixovuwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2992/0930/files/vapomeri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0160/8349/files/blended_instruction.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5830/8006/files/bojik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0234/7168/files/d_d_4e_races_and_classes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0654/7352/files/wowaxosopeli.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_off00006267.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6267 5464 bytes
SHA-256: 1440d55646430bf8486c693f43b6cd3d1272bda097fb7faa83bae0e40faf2ba9
font_01_sfnt_off000074d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74D2 10312 bytes
SHA-256: 50638407bccc2eb868bb49f1044f6a0456782c849c1aef3062c17cccee81ed1c

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