Malicious PDF — malware analysis report

Static analysis result for SHA-256 048ae06783dd38cc…

MALICIOUS

PDF

71.6 KB Created: 2020-11-14 15:10:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: cdb06fa6989b85fb6f874b8511819a2c SHA-1: 1da3d98098d30b20763fd5ec0633eb031591bcb8 SHA-256: 048ae06783dd38cc2b27b1ec8c87a11c583777250385a7b44b43d9d75533ac9a
196 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 high likelihood of malicious intent. The heuristics reveal it contains a large number of external links, many pointing to SEO redirectors, suggesting a phishing or link-farming scheme. The primary malicious URL identified is https://trafftec.ru/123?utm_term=allan+bloom+shakespeare%2527s+politics+pdf, which likely serves as a lure or distribution point for further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • 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://trafftec.ru/123?utm_term=allan+bloom+shakespeare%2527s+politics+pdf PDF link annotation
    • https://wepoduxusuduxi.weebly.com/uploads/1/3/4/3/134306179/5062018.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365580/normal_5f89ddc74a6a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369305/normal_5f93f6df64b2f.pdfIn PDF document text
    • https://firerokuk.weebly.com/uploads/1/3/1/1/131164187/lufagabi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369659/normal_5f94f170581a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427104/normal_5fa81b842a3f1.pdfIn PDF document text
    • https://gozofuma.weebly.com/uploads/1/3/0/8/130874065/nobapabepo-jisukotez-vugaletate.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375887/normal_5fa219b7e746c.pdfIn PDF document text
    • https://lewixixidofuj.weebly.com/uploads/1/3/4/3/134393564/zetirupifuwed_fuzuxejetebew_xomamufijod_gidalal.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa1804a7-67dc-437f-945d-84cd68179050/89139016327.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8911cb2e-9213-4e1b-88ec-08486db90a5e/gujojabupixoxikudowusinek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfcf36c2-4749-4bc5-88e5-d791ff2b9d28/godeso.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/63208506227.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA93 5620 bytes
SHA-256: 7f71a1ec21ad1472d8f50306a9328fe007242825a48d672f9387a408a5e675f9
font_01_sfnt_off0000ed89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED89 10640 bytes
SHA-256: 365183bff5429d9be6bc3bcb831859c41ef3ad2a2df991f18c2298dcc39ca732

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