Malicious PDF — malware analysis report

Static analysis result for SHA-256 701373d51c5126e4…

MALICIOUS

PDF

142.7 KB Created: 2020-12-22 21:40:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 54bfce72f6c4876a0d9eb228818b4e1f SHA-1: 2a3e353b43fec7673bc364c87bb61a803ac4a99a SHA-256: 701373d51c5126e4743dd00a55ba6df56548a807dac0720790273659c0453e80
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a critical heuristic identifying it as a 'PDF_SEO_LINK_FARM'. The primary URL, 'https://traffset.ru/aws?utm_term=ahorn+blatt+form', suggests a potential phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://traffset.ru/aws?utm_term=ahorn+blatt+form PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4480393/normal_5fc8ee0b19b46.pdfIn PDF document text
    • https://fobaripiso.weebly.com/uploads/1/3/4/4/134443650/2061917.pdfIn PDF document text
    • https://gokopawe.weebly.com/uploads/1/3/4/4/134493337/voxexinelosiremejas.pdfIn PDF document text
    • https://towipikegogu.weebly.com/uploads/1/3/4/6/134690187/jabogawazis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403541/normal_5fda03ec3bd3b.pdfIn PDF document text
    • https://gejatovuri.weebly.com/uploads/1/3/1/4/131406669/xuxozodorozus_bulanafavita.pdfIn PDF document text
    • https://zugozoriv.weebly.com/uploads/1/3/4/7/134770463/7319cb3ed07d6.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/c87f4b6e-1f39-4746-b438-35521bb8e734/mork_saying_shazbot.pdfIn PDF document text
    • https://s3.amazonaws.com/lekizopiloref/indeks_pembangunan_manusia_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/88296255635.pdfIn PDF document text
    • https://s3.amazonaws.com/mozirolinitaje/evan_mcclintock_instagram.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/airbrush_pro_paid_apk.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001dc95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DC95 4956 bytes
SHA-256: 00f8e0e9a4b2a22a0002b9d973b73793cb8558953baf6cbcc3fc842d95fa45b6
font_01_sfnt_off0001ed4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1ED4D 13456 bytes
SHA-256: 809c229e0694a82578074b06225b81860be14cce84c2f4e855b37cb4fd199ea3
font_02_sfnt_off0002182d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2182D 16112 bytes
SHA-256: da133098c8ec00180ce5fe37c74b807b143adc5860869a2f7b6211e455203b10

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