Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7d55aefea1c46a6…

MALICIOUS

PDF

76.7 KB Created: 2021-02-18 00:19:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: edf470a402e17fa8a32963bf7426b7dc SHA-1: 42a7c3f836fd88e26bc145d30504d14b6824fe56 SHA-256: e7d55aefea1c46a622819e878ce8f6f8bf24c06b82e15fbbf771f3b07e03d5c3
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external links, with one prominent link pointing to 'https://crophysi.ru/123?utm_term=what+is+the+best+way+to+speak+english+well', suggesting a link farm or phishing lure. The presence of embedded links and the overall structure point towards a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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://crophysi.ru/123?utm_term=what+is+the+best+way+to+speak+english+well PDF link annotation
    • https://cdn.sqhk.co/tezabulaw/jiGihQX/devil_evolution_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/budajawisore/1hfggHh/repost_for_instagram_repost.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365620/normal_60274afd86c6b.pdfIn PDF document text
    • https://xexafuru.weebly.com/uploads/1/3/1/0/131070851/1631451.pdfIn PDF document text
    • https://cdn.sqhk.co/bulixanejad/hc8M1ii/96881417280.pdfIn PDF document text
    • https://kepijiloxa.weebly.com/uploads/1/3/4/1/134108658/vunikuj_bavuvaba.pdfIn PDF document text
    • https://cdn.sqhk.co/puvegipuros/giviahe/10914753029.pdfIn PDF document text
    • https://cdn.sqhk.co/gotulurowav/aFlupvM/77515417855.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413968/normal_5ffa77f99a4e9.pdfIn PDF document text
    • https://cdn.sqhk.co/momugutatok/Qif9n8f/88879508199.pdfIn PDF document text
    • https://cdn.sqhk.co/runenuti/awsFyEI/live_cricket_score_world_cup_2019_streaming.pdfIn PDF document text
    • https://cdn.sqhk.co/bidamasegom/FZgehiX/rexefefu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473403/normal_5fcb690280bdb.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/mijumomub/99481873921.pdfIn PDF document text
    • https://s3.amazonaws.com/wipotegadodorek/zalaxalagejibaji.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/pawomuse.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/kudabirup.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_off0000edc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDC9 5396 bytes
SHA-256: 9eb00779996eae3207f40860f59c5b460ef864448d2ac4d9028c11771a98b564
font_01_sfnt_off00010041.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10041 11544 bytes
SHA-256: ba7aba76078578adbcce4f8f454069549de17a405b2b814335c58a1ec5ce891b

Open this report in the interactive analyzer, or submit your own file for analysis.