Malicious PDF — malware analysis report

Static analysis result for SHA-256 764dfaba0ffa01ba…

MALICIOUS

PDF

42.6 KB Created: 2020-08-24 00:00:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a9061df32bda12c7e92c8b63fc95b4b SHA-1: c78b1b9a43cb832c14c24aa38ce22b7d6cc069ea SHA-256: 764dfaba0ffa01baf7c5d132b85c8e079225ee2dd9d22cb86a1c63d04d0cbfbb
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to a 'Conjurer mage guide' and includes the malicious redirector URL. The presence of a large number of external PDF links, many pointing to Shopify, suggests a link farm intended to distribute malicious content or manipulate search engine results.

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.cc/pify?keyword=conjurer+mage+guide
    • http://bewuz.saraandreahoffman.com/uploads/1/3/2/6/132683001/daa434a1.pdf
    • http://files.contractordepotplus.com/uploads/1/3/1/8/131856713/nadabi_bafopipes_neladulijalom_pobivute.pdf
    • http://files.carnegiemellonsws.com/uploads/1/3/0/9/130969358/janenolowaxifodit.pdf
    • http://lodaz.secondchancesurrogacy.com/uploads/1/3/2/7/132712380/02b4a0235e8e1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/1095/6196/files/huijsing_operational_amplifiers.pdf
    • https://cdn.shopify.com/s/files/1/0432/2718/5311/files/sojavosewebevupibuker.pdf
    • https://cdn.shopify.com/s/files/1/0432/7663/2214/files/bugafetugoja.pdf
    • https://cdn.shopify.com/s/files/1/0432/5975/6708/files/99820151972.pdf
    • https://cdn.shopify.com/s/files/1/0430/0485/4426/files/kopisono.pdf
    • https://cdn.shopify.com/s/files/1/0433/6985/7176/files/wosebozenewepezaluki.pdf
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/43535608807.pdf
    • https://cdn.shopify.com/s/files/1/0432/2879/0946/files/manifesto_barisan_nasional_pru_14.pdf
    • https://cdn.shopify.com/s/files/1/0435/4949/1359/files/gipekarekuxew.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_off00006a14.bin
929102765efeda755b0d12dd75b8cbd08773c559ac497e84ce4c6f3f1687fa50
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A14 4916 bytes
font_01_sfnt_off00007ab6.bin
b8fc66a64e6c1d0aa2baa6d732177da6aa9f5878fc39091d3fd542eb54088c55
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AB6 10288 bytes