Malicious PDF — malware analysis report

Static analysis result for SHA-256 69328d6835683bd4…

MALICIOUS

PDF

77.7 KB Created: 2021-03-09 13:54:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a22b3e883a1152cdc3c0fa09a99e2eb SHA-1: c7fcca038f65e8294ae61fbeb156a48f3fe0c493 SHA-256: 69328d6835683bd400ac33a6aa909368e1b565a129c3d8cb0380f29d31b16f1a
182 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs pointing to suspicious domains, with one specifically identified as a known malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were extracted, the presence of numerous links suggests an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9511

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.
  • 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.
  • 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://yafferge.ru/award?keyword=southern+and+northern+blotting+pdf
    • https://cdn.sqhk.co/mimufedu/aZhdujc/korean_war_history_guide.pdf
    • https://static.s123-cdn-static.com/uploads/4408471/normal_5ff80aacf39bf.pdf
    • https://cdn-cms.f-static.net/uploads/4365555/normal_5fd94bb1335e6.pdf
    • http://govnosiakxws.online/5610440950rspwl.pdf
    • https://xubisimas.weebly.com/uploads/1/3/4/7/134769706/guxejubifoduka.pdf
    • http://najetaxu.mygamesonline.org/cyrano_de_bergerac_book_english.pdf
    • http://aazzzry.space/55585438178jz3gy.pdf
    • https://xidokuwu.weebly.com/uploads/1/3/1/4/131453793/5261026.pdf
    • http://zoguponuwuxoli.medianewsonline.com/what_is_osha_10_hour_training.pdf
    • https://vobakedipevurot.weebly.com/uploads/1/3/4/6/134661611/cb2342.pdf
    • https://xiwulugizasu.weebly.com/uploads/1/3/2/7/132741433/4e2de3.pdf
    • https://static.s123-cdn-static.com/uploads/4491687/normal_5fca2e142a34f.pdf
    • https://cdn.sqhk.co/keridola/mHij0ia/snowflake_ipo_stock_symbol.pdf
    • http://price-list.moscow/243118824167w241.pdf
    • https://sokuvefababadax.weebly.com/uploads/1/3/1/8/131856373/zobojagigoj.pdf
    • http://fofiwafajelerax.sportsontheweb.net/palowazesaveragibiji.pdf
    • http://studyweb.site/59822208022t3s6k.pdf
    • http://tadosuzewamu.medianewsonline.com/79383582344.pdf
    • https://cdn-cms.f-static.net/uploads/4485443/normal_5fd640ff9495c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://rewuwuja.onlinewebshop.net/zemetitulux.pdf
    • http://kilarosine.atwebpages.com/animorphs_book_21.pdf
    • http://kewetanetoza.atwebpages.com/polk_audio_soundbar_remote_control_replacement.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eeee.bin
a31aedb3fe800cd2b5c0120397ec9570e12c7cc97febb81e3d6171160c50e6bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEEEE 2960 bytes
font_01_sfnt_off0000f970.bin
665d71e1b4e012be8ff5a6f64cfb377ba9df36a22e888d9d598106b63db9d665		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF970 5252 bytes
font_02_sfnt_off00010b39.bin
c051ed70fc42bcb8539e26436389395a9ab3ffbaea6a6ab0da36707e05f0d3ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B39 11248 bytes

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