Malicious PDF — malware analysis report

Static analysis result for SHA-256 1326469dad5678c2…

MALICIOUS

PDF

73.8 KB Created: 2021-03-11 08:50:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2fbcc5a13d6901e9b9aed16d4f73914a SHA-1: e0b707862840254f2b90b777e1c0d7917a480f36 SHA-256: 1326469dad5678c2f4ffebd138e832138234f64d15615f64f4bec3305adc28ef
126 Risk Score

Malware Insights

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

The PDF contains numerous external URIs, many hosted on disposable domains, suggesting a link farm or phishing infrastructure. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a phishing or malware distribution attempt, likely using embedded JavaScript to facilitate redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://resalured.ru/wix?keyword=pure+substance+and+mixtures+worksheet+answers
    • http://fisujerekuvij.getenjoyment.net/how_to_set_timex_ironman_classic_30.pdf
    • https://cdn-cms.f-static.net/uploads/4427519/normal_5fd66e4b7b31a.pdf
    • http://mokaxizekebade.scienceontheweb.net/bakuxesisoxi.pdf
    • https://static.s123-cdn-static.com/uploads/4478127/normal_5ff8efd07ebba.pdf
    • https://cdn-cms.f-static.net/uploads/4444092/normal_5fd2df3acc1e8.pdf
    • https://jonenatone.weebly.com/uploads/1/3/1/8/131872225/4904398.pdf
    • https://lagisarer.weebly.com/uploads/1/3/4/1/134131240/dekarakuzi.pdf
    • http://xafesuvorolivig.scienceontheweb.net/fojixeruroraja.pdf
    • https://lonexababite.weebly.com/uploads/1/3/1/1/131163854/guluvofozawafub-sizexetil-wunebowisez-weziwifufadolat.pdf
    • https://vonepegoparopew.weebly.com/uploads/1/3/4/3/134352316/b8dcd23f4895.pdf
    • https://static.s123-cdn-static.com/uploads/4369516/normal_5fffd97da8971.pdf
    • http://disclosures.space/pemowenideia5ib.pdf
    • http://erkutungotu.com/famamikuvagebojalimojiuhni4.pdf
    • http://jobware.pro/freightliner_sprinter_service_locationsa4xev.pdf
    • https://cdn-cms.f-static.net/uploads/4450148/normal_60215f139ba16.pdf
    • https://cdn-cms.f-static.net/uploads/4416787/normal_6010e16af0b1a.pdf
    • http://maska-respirator.com/muxivikilh8ymx.pdf
    • http://gowanenutik.mypressonline.com/the_real_book_6th_edition.pdf
    • https://jusegopij.weebly.com/uploads/1/3/4/4/134480833/zozexi_safido_wudata_mavomosuxutexu.pdf
    • https://static.s123-cdn-static.com/uploads/4445737/normal_5ff2cc388f1fb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/zagubip/50668351644.pdf
    • https://s3.amazonaws.com/xapota/breville_tg_870_manual.pdf
    • https://s3.amazonaws.com/nafoxuda/goxujitimosigivedaxa.pdf
    • https://s3.amazonaws.com/wipotegadodorek/best_way_to_sleep_with_broken_femur.pdf
    • https://s3.amazonaws.com/sorogamat/anemia_in_pregnancy_ppt_free.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d5c7.bin
cc410918122363ab449cbb5b2589f6c7169ab6c9e1d4174c8c1fa7f4a067512a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD5C7 5396 bytes
font_01_sfnt_off0000e7f5.bin
db37d053238e1fe0278b053789c7956f21b6c64aa6bc8806849888c473538eca		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE7F5 10168 bytes
font_02_sfnt_off00010ad8.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10AD8 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.