Malicious PDF — malware analysis report

Static analysis result for SHA-256 f90d84219f23d3e4…

MALICIOUS

PDF

45.2 KB Created: 2020-05-25 00:13:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e448bce5050ee5fb23911ea0ca81ce03 SHA-1: f4e08c9c2b48161a4ffb1962acc3fff62e849a0f SHA-256: f90d84219f23d3e460b8bc12c31c7abb1de54bacc4705c7653cebd7b8d185999
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF document employs a lure of 'Wanted full hindi movie download mp4' to entice users. It contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. These links likely serve to manipulate search engine results or redirect users to further malicious content. The ML classifier strongly indicated maliciousness, supporting the assessment of a link farm or SEO spam attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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 http://getlegacyinsurancequotes.com/uploads/1/3/1/8/131872130/131872130.html#wanted+full+hindi+movie+download+mp4
    • http://timberback.com/uploads/1/3/0/2/130289686/2822077.pdf
    • http://learnshareact.net/uploads/1/3/1/4/131452879/kaloxijukisuvo_duvumowolat_betigumutax.pdf
    • http://allwestindustries.com/uploads/1/3/0/7/130739530/xuwogibodomufeken.pdf
    • http://allroundequine.com/uploads/1/3/0/9/130969916/mokevuwitil.pdf
    • http://cycnicoleh.com/uploads/1/3/0/9/130969847/nutenige.pdf
    • http://actongateaudio.co.uk/uploads/1/3/1/1/131164067/degujox_fopuzilidojo.pdf
    • http://sacredstarastrology.com/uploads/1/3/0/6/130622022/wuzefilewinan_dixazorol.pdf
    • http://odysseymapsandcalligraphy.com/uploads/1/3/1/4/131453501/ef42ce694cda4b.pdf
    • http://yachtrock.biz/uploads/1/3/0/8/130873923/tudukogelubaso.pdf
    • http://mta-sts.mail.livelifediscover.com/uploads/1/3/0/4/130476370/tezifadivubega-xuwezojaziwiv-pumel-vexosesita.pdf
    • http://548media.com/uploads/1/3/0/5/130551342/2602759.pdf
    • http://mobilpapershredding.com/uploads/1/3/0/7/130739127/a10f6.pdf
    • http://partsboss514.com/uploads/1/3/0/6/130639481/gumamuziku-pamaruloku-matebo-nipozas.pdf
    • http://wasupport.net/uploads/1/3/1/4/131407138/b5b8d074c982474.pdf
    • http://northconwayfarmersmarket.com/uploads/1/3/0/3/130313588/jagizo-gasivolur-suzitofitul-bunifukolakoke.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007083.bin
40d105d150f68b3feeca433a946b80663143a197a65f77a10b2c46d6472b1b72
pdf-font-stream PDF embedded font (sfnt) at offset 0x7083 10344 bytes
font_01_sfnt_off0000939a.bin
ebd2804bff382343e08f6a42dc45f69f4e794c08b23908ae60ba78ededae74b1
pdf-font-stream PDF embedded font (sfnt) at offset 0x939A 16164 bytes