Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1992f38bb47ecc9…

MALICIOUS

PDF

68.3 KB Created: 2020-08-17 05:22:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 65dbd0f983ef732708d34cc7e312abc6 SHA-1: 4194aac03cbdef6833a69891cdbe19c27ad40499 SHA-256: c1992f38bb47ecc9fcf1aae3fb5f1c12fce0e1500da40ad1f752fbfc70f1e05b
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a deceptive title "Charpy test report" and embeds a large number of external links, many hosted on shopify.com, suggesting a link farm or SEO spam tactic. One critical heuristic identified a link to a known malicious redirector at `https://ttraff.ru/pify?keyword=charpy+test+report`. The document body is heavily obfuscated but contains the redirector URL. The presence of numerous links and the malicious redirector indicate a likely phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not 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.ru/pify?keyword=charpy+test+report In PDF document text
    • http://veneku.clubomegatree.com/uploads/1/3/0/8/130873851/watezol_valevoli.pdfIn PDF document text
    • http://wutajodik.newlifechurchmo.org/uploads/1/3/2/6/132682646/wopelakekofet.pdfIn PDF document text
    • http://files.statelicensedcounseloradvocate.org/uploads/1/3/1/0/131070912/1589268.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/1/0431/9959/4656/files/razepebiwadarajezorel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58014629257.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9123/7791/files/asvab_for_dummies_3rd_edition_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4742/0066/files/92684585724.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1675/7153/files/anime_pose_reference.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6538/4866/files/51221314924.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0962/2695/files/70196383764.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7564/7128/files/noxemof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1856/6306/files/timedewazimoxipawite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3111/7467/files/86677737453.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5762/6792/files/83795365239.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/44411244229.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8184/3353/files/gasakizanemabivew.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b978.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB978 4880 bytes
SHA-256: c078e46c6e1bc6f5545ce419037bb2d67c2f269e74ddb21f08f245569ef49deb
font_01_sfnt_off0000ca16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA16 10656 bytes
SHA-256: 08f68a9e8f23b627a9f06228710c2d195260435f1049ab10bb41b8039ed26cee
font_02_sfnt_off0000ee8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE8A 16148 bytes
SHA-256: 49436f94d5abf10ca6af8af9848174aab82dfe7bc58a5146411d238fd5c76648