Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca6e0df03f1bdffa…

MALICIOUS

PDF

70.7 KB Created: 2021-01-09 23:31:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 7fe5167a40db2b329072b163a9cb2a35 SHA-1: 53ead7f9ee2b36acfc135253af7298740ae66b54 SHA-256: ca6e0df03f1bdffa66862275863d5f708f4521f981191882e886db82cb389468
194 Risk Score

Malware Insights

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

The PDF contains heuristics indicating it is a malicious redirector, specifically designed for phishing and potentially malware distribution. The embedded URL, 'https://ggtraff.ru/aws?utm_term=fatca+report+form+8966+instructions', is flagged as malicious and associated with SEO-based phishing lures. While no scripts were explicitly extracted, the PDF structure and the nature of the embedded link strongly suggest an attempt to trick users into downloading further malicious content or submitting sensitive information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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/aws?utm_term=fatca+report+form+8966+instructions In PDF document text
    • https://site-1171749.mozfiles.com/files/1171749/10012287980.pdfIn PDF document text
    • https://site-1178831.mozfiles.com/files/1178831/10388627595.pdfIn PDF document text
    • https://site-1175524.mozfiles.com/files/1175524/gesurigiwiwu.pdfIn PDF document text
    • https://site-1173381.mozfiles.com/files/1173381/rimukajejax.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368759/normal_5f879a3214839.pdfIn PDF document text
    • https://site-1191950.mozfiles.com/files/1191950/14741531569.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446789/normal_5fed149c11f9c.pdfIn PDF document text
    • https://site-1177680.mozfiles.com/files/1177680/horizon_treadmill_t303_reviews.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479688/normal_5fc1211eb972f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sefiwegegagu/abcd_telugu_movie_video_songs_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/bawalidamovidud/meepo_dota_2_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/divikufifir/curriculum_vitae_template_for_college_students.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/flip_words_answers_list.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d70d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD70D 5588 bytes
SHA-256: da41503f73caacdc4caac33c533b2b9459159b1b5550aded23238ff6a9acf610
font_01_sfnt_off0000e9f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9F7 10620 bytes
SHA-256: 8c4cfd4de7a0a03080253b483f6f48eb70054eadd33716560c7ad57a868f662c