Malicious PDF — malware analysis report

Static analysis result for SHA-256 73d14827e9164247…

MALICIOUS

PDF

61.0 KB Created: 2020-11-29 20:22:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 2fcbf685596a17334ad66dcc8eb09461 SHA-1: 7cbf75e5071cdd24dc9880bcbcd30601c6b15e8d SHA-256: 73d14827e91642472626f87ebc90d1e90e42b3661aa80a564fdd0806c32b5707
254 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous links to redirector infrastructure, specifically identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_UTM_REDIRECTOR_LINK' heuristics. The primary redirector URL is 'https://gettraff.ru/123?utm_term=what+is+axis+of+symmetry+of+a+parabola', which is likely used to funnel victims to malicious sites. The 'ML_NYX_PDF_MALICIOUS' and 'CLAMAV_DETECTION' heuristics further confirm the malicious nature of this PDF, classifying it as phishing or a trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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.
  • 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.
  • 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://gettraff.ru/123?utm_term=what+is+axis+of+symmetry+of+a+parabola In PDF document text
    • https://kizujaxaluw.weebly.com/uploads/1/3/4/3/134393650/309c47b07.pdfIn PDF document text
    • https://meboguvogo.weebly.com/uploads/1/3/1/4/131437667/5959404.pdfIn PDF document text
    • https://peziwotikiju.weebly.com/uploads/1/3/4/6/134602895/lexivedolawew.pdfIn PDF document text
    • https://gaburidukir.weebly.com/uploads/1/3/4/4/134463400/d83d857a1c2533.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/0d6aad4e-3c59-49e6-ba84-82dfea288ab8/wolenawavu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03d0f89f-ccd3-48a1-9059-bc16be760dbc/rufovedirokoxaloxabu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d40d0367-b85e-41ef-b388-03305ba32a33/91585437128.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09f9af6c-8948-444a-b6b4-0b132a552beb/bejukufo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9cc72494-939a-443f-84d6-f04716120f17/ability_score_improvement_pathfinder.pdfIn PDF document text
    • https://s3.amazonaws.com/punurum/guide_playbook_synonym.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49d4ba87-e9ce-44e6-90ff-e46eb3368df8/dabanotarenopukodase.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdb4f428-e787-4ac0-b4f6-b6d3ed7490cc/donomale.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_off0000b225.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB225 5464 bytes
SHA-256: 3ff3a4301ffd17ec958fea13a8dd883b3ffedc21b09598d9f173a552d50de0b6
font_01_sfnt_off0000c4a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4A4 10176 bytes
SHA-256: e8e35270cf09a8e8579925433bccfb5cbac68add8dab151659c086a82fdcbd9e

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