Malicious PDF — malware analysis report

Static analysis result for SHA-256 67a2864196eb4f47…

MALICIOUS

PDF

75.0 KB Created: 2020-12-26 22:44:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: d805d245019bc5058eadcd71607785e2 SHA-1: ec0c9ddd6c0e772867d4bacf3c005a99166eb621 SHA-256: 67a2864196eb4f47d82d89b40b7446457c7dd68c547e05cafba70f5758cc9178
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 detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains a large number of external links, suggesting a link farm or SEO poisoning tactic to direct users to malicious sites. The embedded content, though heavily obfuscated, appears to be related to the lure 'Ombre nails diy without sponge', likely intended to trick users into clicking the malicious URLs.

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://trafffe.ru/strik?utm_term=ombre+nails+diy+without+sponge PDF link annotation
    • https://cdn.sqhk.co/solumapidema/RX4yziM/feisty_pets_grey_dog.pdfIn PDF document text
    • https://vebajixumese.weebly.com/uploads/1/3/4/4/134483039/1a82897bd8760.pdfIn PDF document text
    • https://vadezuposijeru.weebly.com/uploads/1/3/4/6/134660157/8143262.pdfIn PDF document text
    • https://cdn.sqhk.co/futidiwe/bVHVgce/repair_small_hole_in_wood_floor.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/vonusirukete/92027528303.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/lisag.pdfIn PDF document text
    • https://s3.amazonaws.com/gaxuremewuger/godhead_here_in_hiding.pdfIn PDF document text
    • https://s3.amazonaws.com/libosokune/a_sociedade_e_o_meio_ambiente.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2685389-4b2d-45fe-95b6-4d28f6eccda1/70236432596.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd3b391c-4c7c-4fed-b9cc-f22a78ee27dd/jowibebaxaduwubunugutezux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/251e1736-d4dc-4838-b0e5-d07273c1410f/gadowesona.pdfIn PDF document text
    • https://s3.amazonaws.com/rejiner/present_continuous_tense_worksheet_grade_7.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/lasegidazaris.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ebdbd14-b49f-4dca-9741-cb9ef1914c64/38929993528.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a724822c-a3c4-4ff7-bf66-6c9f6b5142e3/31956193127.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d6c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6C9 5616 bytes
SHA-256: e6e1460c1ee45e53580d71e5ecee98fcb060f4fa9d921741f7db1591c58eeada
font_01_sfnt_off0000e9b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B8 11940 bytes
SHA-256: df40392f711bd6b96c662ec9ef44cae6efb7bf761310c17307462224de59863a
font_02_sfnt_off0001110b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1110B 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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