Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5a8240d013c0e88…

MALICIOUS

PDF

39.3 KB Created: 2020-08-02 23:32:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 290741f16fa8e5f6563480a27182661a SHA-1: 51b17d6c600e4895bd7a28284395a13116b8a334 SHA-256: a5a8240d013c0e880a1a1fad52747fa7029e3653488296dc5cc473533285c104
194 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to external resources. The primary malicious link, 'https://ttraff.cc/pify?keyword=polar+mohr+115+emc+manual+pdf', is identified as a known malicious redirector. The document's structure and the presence of numerous links suggest a link farm or SEO poisoning tactic to drive traffic to malicious sites. The ML classifier strongly supports the malicious nature of this PDF.

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=polar+mohr+115+emc+manual+pdf In PDF document text
    • http://files.denisegrobbelaar.com/uploads/1/3/0/7/130775588/fowujakusibafa.pdfIn PDF document text
    • http://files.alegrarsejournal.com/uploads/1/3/1/4/131438003/sovomoki.pdfIn PDF document text
    • http://files.liveinlovecs.com/uploads/1/3/0/7/130775462/zomeberax_lomidi_falunukoposinoz.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/1/0440/5464/2853/files/51689528480.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/figarawevig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fimovubonivunab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6043/6896/files/gegafaxanekuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5651/2680/files/6672403489.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3075/8054/files/36125592714.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nuxekenosagulowagegur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2599/7722/files/hello_world_html5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8065/5775/files/zajege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8642/9861/files/690635034.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0962/2691/files/78767468329.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5235/2159/files/60039160447.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5238/3907/files/63029500270.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_off000059fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59FD 5392 bytes
SHA-256: 4319e35031f2bd16719ab9af560868b2100c2798e76566ed1df6e2208f87494c
font_01_sfnt_off00006c38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C38 10560 bytes
SHA-256: 87b7d201903b0f13587bfffb2c713247a36054f0f05f19b5d76cbe1bf9ca63a4

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