Malicious PDF — malware analysis report

Static analysis result for SHA-256 38f0e7175b70d944…

MALICIOUS

PDF

34.1 KB Created: 2020-08-11 21:13:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fecaa0d36bd849c6e8f5b9e05a1375df SHA-1: 68d518b5ba313c01c66d8627e934b8f3c3394b40 SHA-256: 38f0e7175b70d9441969df92e0cbe6233d0ffbde47e5905627d7818fd3eca914
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=eliciting+sounds+techniques+and+strategies+for+clinicians+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. Additionally, a heuristic for a PDF link farm was triggered, suggesting a broader campaign of distributing malicious links via PDFs. No scripts were extracted, but the embedded URLs and heuristics strongly suggest a phishing or redirection attack.

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=eliciting+sounds+techniques+and+strategies+for+clinicians+pdf In PDF document text
    • http://radukanu.mainesting.com/uploads/1/3/1/6/131606598/kefoze.pdfIn PDF document text
    • http://files.thesturdybranch.com/uploads/1/3/1/1/131164153/watose.pdfIn PDF document text
    • http://files.joiedevivresantafe.com/uploads/1/3/1/3/131381539/0cdfd79b1f6.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/1/0433/9807/0426/files/vilukerodevotani.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6784/2465/files/lixeruron.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2274/4741/files/34254617931.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1110/5191/files/reli_tours_japan_visa_application_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1395/6007/files/81700492883.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3006/0955/files/42472914888.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4796/8149/files/mivivuvosak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4518/0824/files/astm_a240_type_304.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0807/1576/files/xadonowuvigojigabanizu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6335/3244/files/53974991050.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_off00004818.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4818 5500 bytes
SHA-256: 0c81a31b7f8f431eb983e014260a22ed240a61ac266a44af76cd8462c7545d9f
font_01_sfnt_off00005abd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ABD 9532 bytes
SHA-256: 1c2b57a180819f801b56df51c09e4b5d5a960bd95f1ce273b9a395002fba7fbb

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