Malicious PDF — malware analysis report

Static analysis result for SHA-256 feecc852750ea11e…

MALICIOUS

PDF

73.4 KB Created: 2021-03-10 18:50:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 3adfba3f1fb0ad3837478140cf97a0db SHA-1: a0f9d27226a8cb51e62ef20757476e3b58686fbf SHA-256: feecc852750ea11e8ab6b61f60cdb126506a358ff2c4cdc5402aa0d09e89a807
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://baarspo.ru/wix?keyword=st+johns+townsend+ma PDF link annotation
    • http://senenetikoxikom.22web.org/70890551551.pdfIn PDF document text
    • http://fobimuwoxik.iblogger.org/nagugeme.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/zugutixe/88549635313.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f92dac3f-4ea7-4d89-9c0a-9c7002c57380/30105732837.pdfIn PDF document text
    • https://s3.amazonaws.com/nisiwanolom/audacity_software_free_for_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/sinadi/88367689300.pdfIn PDF document text
    • http://kuparego.rf.gd/15696549724.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/companies_house_end_of_year_accounts_template.pdfIn PDF document text
    • http://mifumupesa.rf.gd/atahualpa_yupanqui_poemas.pdfIn PDF document text
    • https://504706c9-3a86-45eb-876a-6494ef133fff.filesusr.com/ugd/80c1db_ae558f14ff4a4cfbb7365f7466bf5521.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/biwuwukesazef/sezusalololedek.pdfIn PDF document text
    • https://s3.amazonaws.com/nisiwanolom/98321306783.pdfIn PDF document text
    • https://cee4a208-09ac-40e0-983f-4c2cc776acbe.filesusr.com/ugd/5ed537_839b18b76cb0489091d5e37243a170ef.pdf?index=trueIn PDF document text
    • http://bibarixe.epizy.com/44550657880.pdfIn PDF document text
    • https://s3.amazonaws.com/wutisigila/nixakerisafiduvuza.pdfIn PDF document text
    • http://nupifikitove.epizy.com/79278220116.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12862efc-999a-4a7b-9950-b42aeb1a74ff/briggs_and_stratton_500_series_158cc_spare_parts.pdfIn PDF document text
    • https://1d942ef5-affb-47d8-8f99-70a3d187b733.filesusr.com/ugd/3283b0_7649f24b18384e37a0327422bfc0d0ec.pdf?index=trueIn 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_off0000e36e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE36E 5208 bytes
SHA-256: a36ddae4aa234a84ad151cf8f6c3b8203e194fae7c3747d28ce3c3ec04eb1dd1
font_01_sfnt_off0000f50d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF50D 10516 bytes
SHA-256: 62abe1bc8ace8a710e1611570a6e63674c34bd6170612dedaf15965a0ece483b

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