Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b202f2a68f82694…

MALICIOUS

PDF

44.5 KB Created: 2020-08-13 18:27:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48653acf6e7b3f2fe76fe89e8453a12f SHA-1: fec13a81dd56330f830ae322241d8433b47c3078 SHA-256: 0b202f2a68f82694cbffee6b07300fd7fe4429af496fed1febb8505d0ec29c4c
154 Risk Score

Malware Insights

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

The PDF contains embedded links, with one specifically pointing to a known malicious redirector at 'https://ttraff.com/wb?keyword=ligasure%20impact%20pdf'. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external PDF links, suggesting an attempt to manipulate search results or distribute malicious content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://ttraff.com/wb?keyword=ligasure%20impact%20pdf
    • http://files.swinglecountertops.com/uploads/1/3/1/4/131437249/8661019.pdf
    • http://files.hardwickwinery.com/uploads/1/3/0/8/130813667/9232181.pdf
    • http://poxubap.studydominica.org/uploads/1/3/0/8/130874277/785881afe.pdf
    • http://jilazewu.italiandentalstyle.com/uploads/1/3/1/3/131380213/jopiri.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0427/5588/3175/files/25607867908.pdf
    • https://cdn.shopify.com/s/files/1/0432/6447/5299/files/fukanikuwuto.pdf
    • https://cdn.shopify.com/s/files/1/0431/7079/1573/files/43448960199.pdf
    • https://cdn.shopify.com/s/files/1/0436/2724/9826/files/77385325437.pdf
    • https://cdn.shopify.com/s/files/1/0430/9411/4465/files/rotobikifebo.pdf
    • https://cdn.shopify.com/s/files/1/0432/7833/6166/files/genestealer_cult_codex_2020.pdf
    • https://cdn.shopify.com/s/files/1/0432/6300/0734/files/20665143406.pdf
    • https://cdn.shopify.com/s/files/1/0428/3557/4943/files/bodulomugifupinonava.pdf
    • https://cdn.shopify.com/s/files/1/0432/3459/0878/files/19066967351.pdf
    • https://cdn.shopify.com/s/files/1/0434/2664/4125/files/32831541193.pdf
    • https://cdn.shopify.com/s/files/1/0432/1270/1860/files/4769994402.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kupesuditijativerawepafu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5812/7270/files/r1-_sn-_q4f7sn7r.pdf
    • https://cdn.shopify.com/s/files/1/0431/6610/5759/files/51739488202.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_off00006cfb.bin
ca066ba98ef36163555bb466affc55e278e4717198121ce388e0f383790779ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CFB 5384 bytes
font_01_sfnt_off00007f3d.bin
4acbc107dac87c170f23230dd01fc6dd14bd343f3b5f69675eed48c68300b1cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F3D 11252 bytes

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