Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ebca1fdd139129a…

MALICIOUS

PDF

72.3 KB Created: 2020-12-22 10:53:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: d83ea80ad289472073b63cc288d1e9b2 SHA-1: c2647a190e5364bbfab3487d6c69339ebadd410c SHA-256: 4ebca1fdd139129aa521626dbe6395c6ea3282b7d7730bcc61e8679581c65eed
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external links, many of which are part of a link farm, and one prominent URL points to 'traffking.ru' with a 'cash money app online' query parameter. This suggests the document is designed to redirect users to potentially malicious websites for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent.

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://traffking.ru/strik?utm_term=cash+money+app+online PDF link annotation
    • https://gegiritofizupog.weebly.com/uploads/1/3/4/6/134644009/kebedi.pdfIn PDF document text
    • https://nifufoji.weebly.com/uploads/1/3/4/4/134458522/rupefab_zagifuxizatuve_lekonomobafuza_jumokidag.pdfIn PDF document text
    • https://dutajidadu.weebly.com/uploads/1/3/4/7/134730474/bb427ecff126227.pdfIn PDF document text
    • https://bozexiwagufib.weebly.com/uploads/1/3/4/6/134695017/movapedapobo-mikijukuxoronud-selemobaxuwap.pdfIn PDF document text
    • https://bulugigedi.weebly.com/uploads/1/3/4/7/134714886/fomilaxebaraked_pozav_wiworojilokivaw.pdfIn PDF document text
    • https://bevabuje.weebly.com/uploads/1/3/4/8/134897483/73560217.pdfIn PDF document text
    • https://tujozidu.weebly.com/uploads/1/3/4/6/134694944/filafef-biwazejodapev-komogerese.pdfIn PDF document text
    • https://muruvusi.weebly.com/uploads/1/3/4/5/134598427/04146af4302.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473618/normal_5fb50b6a2ba8c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc013fe3398ff751529adbc/t/5fcb10fe0814be4f73e32385/1607143680334/68777146821.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc54ceba13a450bab11859f/t/5fc7b932efc65c5b7a4d99b2/1606924594948/blade_reborn_forge_your_destiny_apk.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc596fed49dd12447542bd0/t/5fc988211a258d244fd5930a/1607043108508/lotozaraxuwiwofolakofufo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66114a8e-9b20-4f71-abe3-97064ebe1b3c/cm1_consommer_en_france.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0b633d26ff1194f72bba3/t/5fc237eebc819f1cf4225b9e/1606563823480/87195255122.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_off0000e00c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE00C 4972 bytes
SHA-256: 3c40cbcc33db8c243fe7e9876e0e4f213a4b687ea4cf5d13eca450d70036d11f
font_01_sfnt_off0000f0d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D4 10396 bytes
SHA-256: b1be9214e8d74dfa070b227b57a2dde0cd68f25f2ac06eb4f21eda643b645f21

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