Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f3402fd9f50cc95…

MALICIOUS

PDF

91.0 KB Created: 2020-11-29 12:35:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d74960f22137f68745612e8552e3ccaa SHA-1: 9183ee1ad95a88c00dd5108dd8d134fa838b2adc SHA-256: 1f3402fd9f50cc95e7a34118977fed4d3bb800ab3b57b91e0d96d4345b4d3d9e
254 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded links, including a critical redirector link to 'ggtraff.ru', indicating a phishing or malware distribution attempt. The presence of a large number of external PDF links suggests an SEO poisoning tactic to drive traffic to malicious sites. Although no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest malicious intent, likely to redirect users to a compromised site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ggtraff.ru/123?utm_term=drunk+on+you In PDF document text
    • https://cdn-cms.f-static.net/uploads/4419642/normal_5fb583db57a22.pdfIn PDF document text
    • https://dirigesibujov.weebly.com/uploads/1/3/0/9/130969991/tokodefutiwo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475728/normal_5fa65b3245301.pdfIn PDF document text
    • https://s3.amazonaws.com/wisuw/wogosanepafafojemeremasil.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/pesomopenotajub.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366009/normal_5f8ff428150d8.pdfIn PDF document text
    • https://s3.amazonaws.com/jebupofedijakuk/95646357416.pdfIn PDF document text
    • https://s3.amazonaws.com/jimugivos/29774704977.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459916/normal_5fab334ac595e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382429/normal_5fc2ddc255b18.pdfIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f9bc940-159f-462c-acc0-024e971710f6/basic_and_bedside_electrocardiography_ting_vit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eae32d91-8920-4d60-9129-63c8644ab657/71904168999.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab79b997-1125-45a6-a0bb-1a93d59986df/the_draco_trilogy.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://www.gnu.org/licenses/gpl.htmlIn 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000ff41.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xFF41 12136 bytes
SHA-256: 781e10864846c6ed63cd43d7d0fa1efb62ebb91688e9133dc0267f9e8c7085e0
font_00_sfnt_off0000c5f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5F1 13660 bytes
SHA-256: e1356409c8ae56993aedf17bbca054257e78e762c2571ad75e07a7a6515f997f
font_01_sfnt_off0000f01d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF01D 4424 bytes
SHA-256: ae979bd977e3fb376df7841d85f61b0e417cc6a0a77711d57971d993ea367a71
font_03_sfnt_off00012181.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12181 11884 bytes
SHA-256: 54531802ce35b47501daae1535d46d81a162b86bc721a19729e3b45ddbbc57e1
font_04_sfnt_off00014842.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14842 16092 bytes
SHA-256: 51916e08ba3314e41f6604021376b53d2a921b35e9ccda717e7b780f22163610