Malicious PDF — malware analysis report

Static analysis result for SHA-256 496101e3e2eda11e…

MALICIOUS

PDF

75.9 KB Created: 2021-01-06 13:42:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: ccc04c093080520b67b39b24e626269f SHA-1: cec5e3acf1d54555ab0db5dae16810dbe66f6624 SHA-256: 496101e3e2eda11e4c99c5afc27911a2f23066241bf688630e8981c8b6531f62
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffking.ru/aws?utm_term=bible+on+the+dash'. This URL is also flagged as a high-risk SEO redirector, suggesting a phishing or malware distribution lure. The ML classifier and ClamAV detection further support the malicious nature of this PDF, indicating it's designed for phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://traffking.ru/aws?utm_term=bible+on+the+dash In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366642/normal_5f8771b1e43e6.pdfIn PDF document text
    • https://cdn.sqhk.co/zazavoxujub/2hhjcjh/dixosovepe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391331/normal_5fea301cb1b0b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461229/normal_5fc0987ca16ac.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/vipuxafol/alaipayuthey_songs_maango.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fdb8c65-c805-42cf-b4bb-3f4a5119f113/mipuliparusomumis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab71d11f-2c1c-4dc9-b6cd-e4036a69c88b/88286734709.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/vekuxuzovemuni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/156dd6a5-7b31-4215-9c25-d5c8c6a80687/briggs_and_stratton_28q777_repair_ma.pdfIn PDF document text
    • https://s3.amazonaws.com/kasuwevovog/tivedikutudumu.pdfIn PDF document text
    • https://s3.amazonaws.com/netinuwa/alchemy_1-_300_classic_guide.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 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFC9 4796 bytes
SHA-256: b89fda1a703453ac1601414ae051395176de07529e03adfd2608bcca2a308b70
font_01_sfnt_off0000efff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFFF 10888 bytes
SHA-256: d0ccbe00eb7f318d862fa248b7d67e1e499d864d0303c54f67cdf2059faa4bee
font_02_sfnt_off000114ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114FF 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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