Malicious PDF — malware analysis report

Static analysis result for SHA-256 05823416b9179414…

MALICIOUS

PDF

94.0 KB Created: 2021-04-01 16:18:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75310647a2c9c7056a87a982acff742a SHA-1: a33028a212db908ce6989b0714df505c78da3151 SHA-256: 05823416b917941461340ec16c7702cfd22f420ab0b971dafa81b70cba428a0e
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. One of the primary external URIs points to 'https://golowaki.ru/award?keyword=beef+cattle+production+in+nigeria+pdf', suggesting a lure to a potentially malicious site. The ClamAV detection and ML classifier also indicate malicious content, consistent with a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://golowaki.ru/award?keyword=beef+cattle+production+in+nigeria+pdf
    • https://kigazodiraju.weebly.com/uploads/1/3/4/6/134678535/vitaga.pdf
    • http://sreview.online/xajuxnwjk7.pdf
    • http://keto-s1.com/vuvalunizedamutopagez8es6.pdf
    • https://cdn.sqhk.co/wigatozaduw/IchgrGb/sap_basis_spool_administration.pdf
    • https://bipawekiramobaz.weebly.com/uploads/1/3/5/3/135325031/damafixavogerewe.pdf
    • http://sdek-24.cc/lolosizakavomebugefakezeua.pdf
    • http://carinsusa.info/spectrum_math_workbook_grade_8_free92cvz.pdf
    • https://cdn.sqhk.co/gogerazina/idbhpgi/disney_sorcerer_s_arena_f2p_guide.pdf
    • https://tizevilujiv.weebly.com/uploads/1/3/1/4/131406709/d272606d58c.pdf
    • https://cdn.sqhk.co/murafabu/dZBsqhg/bilam.pdf
    • https://jerijumewatopod.weebly.com/uploads/1/3/5/3/135330781/e9ccf7.pdf
    • http://copyright-infringement.business/vemikufakajufururogqstq.pdf
    • https://xasevezivim.weebly.com/uploads/1/3/5/3/135302984/wurewomewoxuduxaxaj.pdf
    • http://fontawesome.iohttp://fontawesome.io/license/
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://scripts.sil.orgThis
    • http://www.fontrix.comhttp://www.nhncorp.com
    • http://pepojugatidi.epizy.com/gemischte_brche_addieren_und_subtrahieren_bungen.pdf
    • http://fujesotes.epizy.com/28406426719.pdf
    • https://694dae7a-2033-4a59-8b06-91ff4eec0774.filesusr.com/ugd/e1d58f_2a8bc47b23c343b19bf881d36759aaf9.pdf?index=true
    • http://nuboguvulasof.rf.gd/86259183811.pdf
    • https://def05634-b969-4265-beeb-1e7d695e9a44.filesusr.com/ugd/6865ce_08f0a3a6d8a547019fb55389820634e8.pdf?index=true
    • http://dukizovisepo.rf.gd/rowegakev.pdf
    • http://xojozefobulujox.epizy.com/96495637919.pdf
    • https://944456f3-75eb-4cd6-bbfd-656b3713ada1.filesusr.com/ugd/2c8d66_edcda90b473d4876a564aabcf2fb4f23.pdf?index=true
    • 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
    • http://scripts.sil.org/
    • http://scripts.sil.org/OFLAbyssinica

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f168.bin
ccd11fcc8f2c8d98253d1df1ad5715bf491526bd09f14b428461640ae94bcb2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF168 1740 bytes
font_01_sfnt_off0000fa18.bin
ac11696d9ea70ff7cfc506a4d34dbfeeec802bad9b415d892810124bf6393286		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA18 5196 bytes
font_02_sfnt_off00010bd8.bin
dd1f35e9db16a5a949a7662fcedff4e8c9fd60b1d3ea925bf56dd3d717203ecd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10BD8 20624 bytes
font_03_sfnt_off00012af6.bin
554e2c4f29bcd25e928937311aef59cd50fcbf017d7df1f36f8c0471e9d0a229		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12AF6 2048 bytes
font_04_sfnt_off000133db.bin
63b2d376b9332a82848b1dec66482f7c8ef34abe3463363348c5ea4d607136cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x133DB 12028 bytes
font_05_sfnt_off00015cd5.bin
e399af1ce5bb51fd8c6c10b327cfcaf4cb61214cdc83fcbb04906da66a290e51		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15CD5 3392 bytes

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