Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5d60bef8ac9bedc…

MALICIOUS

PDF

68.9 KB Created: 2020-12-23 16:08:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5cecdd5c58eed72d145d9bfea5863a4d SHA-1: 1a11ae5d471221499428b3a4c8735b9975b90565 SHA-256: e5d60bef8ac9bedc86a10d52048e681e56eb2c59f9ca311262b47ac381422615
214 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is likely used to distribute malware. The document body and embedded links suggest a lure for downloading software, potentially leading to a phishing or malware download scenario. The presence of numerous external PDF links further indicates a link farm used for SEO poisoning or distributing malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffmen.ru/123?utm_term=mini+militia+mod+apk+unlimited+health+ammo+and+nitro+download
    • https://cdn.sqhk.co/berovanova/CklwidR/how_to_draw_baby_feet_step_by_step.pdf
    • https://cdn.sqhk.co/ratugetaj/jajhBja/keselutukujojupexalujufip.pdf
    • https://tesokumerapaj.weebly.com/uploads/1/3/4/5/134522001/xabaj.pdf
    • https://cdn.sqhk.co/bafebolabefo/A3UijN4/fajirejukariribamegadeseb.pdf
    • https://gixisisopovi.weebly.com/uploads/1/3/4/7/134713576/biwotu.pdf
    • https://vebunigujop.weebly.com/uploads/1/3/4/3/134367951/3036d883.pdf
    • https://cdn.sqhk.co/wubumeze/b2jjThc/hope_for_paws_rescue_reviews.pdf
    • https://cdn.sqhk.co/nezafomura/bAihig9/bubble_incredible_shooter_puzzle_level_250.pdf
    • https://wotigutaz.weebly.com/uploads/1/3/4/3/134361511/b644ce.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gezetega/pusesenotixapuvup.pdf
    • https://s3.amazonaws.com/mazugezijap/zafomopivopawavonupob.pdf
    • https://uploads.strikinglycdn.com/files/35db8340-88fa-4c7f-9b89-74d8599efde7/rca_dvd_home_theater_system_300_watt.pdf
    • https://uploads.strikinglycdn.com/files/6dc78194-4843-4fb6-9d07-6131af9eb893/15004533220.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf42.bin
bd0f825228ef446cc6c47a2c3efb9af567ededdfb6f770d7c85a6adf9b41d827
pdf-font-stream PDF embedded font (sfnt) at offset 0xCF42 5180 bytes
font_01_sfnt_off0000e0ce.bin
98ccff48fe57f01401bb6b06cb5f4c8939c5aedfbb48298946de439816b42b2e
pdf-font-stream PDF embedded font (sfnt) at offset 0xE0CE 10900 bytes