Malicious PDF — malware analysis report

Static analysis result for SHA-256 8428415528d436b6…

MALICIOUS

PDF

50.3 KB Created: 2020-08-22 19:55:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f1170ae1ca777a3dd816f7c774e42315 SHA-1: 1b61679bf3ec559cc415ea4b7f78fbb992180235 SHA-256: 8428415528d436b671070f54bb97e29fe50a31747deb6e117aee3acfe56a4acb
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 of which point to redirector infrastructure. The primary redirector URL, https://ttraff.ru/pify?keyword=ethical+egoism+example+in+information+technology, is flagged as malicious. This indicates a likely SEO poisoning or free-download phishing campaign designed to drive traffic to malicious sites. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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.ru/pify?keyword=ethical+egoism+example+in+information+technology In PDF document text
    • http://files.landusesustainabilityjournal.org/uploads/1/3/0/9/130969509/44c3af43f0.pdfIn PDF document text
    • http://files.gmf.ch/uploads/1/3/1/4/131438142/3402403.pdfIn PDF document text
    • http://files.hollywoodmixstudios.com/uploads/1/3/0/7/130739895/8467522.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/1/0427/8150/7740/files/kewazemegefesoxanegunoku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1152/2209/files/dimufubabimuxaniberekupob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zafon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0333/0208/files/83443649988.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0510/0707/files/11833285923.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8901/7497/files/pobonikogun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1678/9927/files/xagegizugesej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8729/7696/files/65662099743.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4431/4024/files/96147988099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/vomol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9970/7810/files/11693215321.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7247/9647/files/vanedijupujofusigefedaf.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_off0000867f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x867F 5556 bytes
SHA-256: ef4b6255255ef05ac41988f76fc7a733a38eecfb2ce6ca1714da9c0c81b15113
font_01_sfnt_off0000994f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x994F 10256 bytes
SHA-256: dbdeaed77a827f74907c9a604f47636f82d77a14d8c8dfddecfabc8f27495805

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