Malicious PDF — malware analysis report

Static analysis result for SHA-256 aff326b995b32b3b…

MALICIOUS

PDF

71.4 KB Created: 2021-02-21 05:37:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ffb369c2eb8879896477fec4b3bd4ecb SHA-1: 2180f68aa1e05f072a06fb8e429c426e720da741 SHA-256: aff326b995b32b3b3e97a0bca18dec147c9ac0484db48023d0b3616e4e6733f8
194 Risk Score

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://yafferge.ru/wix?keyword=dish+1000.2+eastern+arc+installation+guide In PDF document text
    • https://static.s123-cdn-static.com/uploads/4460476/normal_5ff3f0f709366.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377912/normal_5ffcab4f9118e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466370/normal_5fff431c67a3d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469350/normal_5ffd11feaef21.pdfIn PDF document text
    • https://cdn.sqhk.co/bofilewidil/iajgehe/terminator_dark_fate_official_trailer_reaction.pdfIn PDF document text
    • https://cdn.sqhk.co/bamosabubesi/cQV4iLi/ducks_for_sale_tractor_supply.pdfIn PDF document text
    • https://cdn.sqhk.co/sesakiwewe/hcTiegf/icing_on_the_cake_bakery_newton_ma.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370269/normal_5ff167f1e8ac4.pdfIn PDF document text
    • https://cdn.sqhk.co/kosojilufut/bjfgd7m/animal_planet_evolution.pdfIn PDF document text
    • https://cdn.sqhk.co/zapimafe/3vg38gc/flight_tracker_delta_flight_1500.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419433/normal_60191e6cc85b3.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/tudawufed/zizuwawimixoderekipefak.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/20280512887.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/xokuxeteruraz.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_off0000d835.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD835 5560 bytes
SHA-256: ad1cc6defd1e4fb7d77e2516352ba9ad09d7c419cd2e15fce77341e6b5e7f0f4
font_01_sfnt_off0000eb28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB28 11052 bytes
SHA-256: 4f45d373b687b7e0f0a295ae3bdedf1f71f8e795ece80dbdfc01c6d01add6fca