Malicious PDF — malware analysis report

Static analysis result for SHA-256 1abbedf31a3ceb39…

MALICIOUS

PDF

77.3 KB Created: 2021-05-03 10:57:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: c7235254f39766be461c5a7096d5dfc4 SHA-1: 32f5020d54d830307a5a9cf06d4dc94bbf804ae5 SHA-256: 1abbedf31a3ceb3916709d9ccb630e286a06b2813d2c0061ae80363a085b2fcd
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a link farm. It contains numerous external URIs, including one pointing to 'soxebez.ru', suggesting an attempt to redirect users to potentially harmful content. The document body, though heavily obfuscated, appears to be a lure related to a poem, aligning with phishing or SEO spam tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

Heuristics 6

  • 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 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.
  • 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://soxebez.ru/strik?utm_term=little+girl+poem+to+daddy PDF link annotation
    • https://cdn.sqhk.co/lituxopevuk/EWsjjhl/24244756875.pdfIn PDF document text
    • https://ladufuvugekowek.weebly.com/uploads/1/3/4/1/134108614/6fb75ae2575fd90.pdfIn PDF document text
    • http://mon-cmbretagne.com/96270742588bq6yl.pdfIn PDF document text
    • https://cdn.sqhk.co/nemazuwigumo/K4zh5gg/70599483091.pdfIn PDF document text
    • https://setovejuno.weebly.com/uploads/1/3/2/6/132682792/batuwetunaxese.pdfIn PDF document text
    • https://nikulagoronol.weebly.com/uploads/1/3/2/3/132303117/217da0c.pdfIn PDF document text
    • https://cdn.sqhk.co/damapegapi/gfjeBjb/14624068376.pdfIn PDF document text
    • https://cdn.sqhk.co/tinolaseja/zaoicep/78615759995.pdfIn PDF document text
    • https://kexejimeso.weebly.com/uploads/1/3/4/0/134096016/lopuxabepe.pdfIn PDF document text
    • https://zedemozotazodi.weebly.com/uploads/1/3/0/7/130776451/gevezogela_pilosatulew_pomoped.pdfIn PDF document text
    • http://refoxedij.iblogger.org/applied_anatomy_of_upper_limb.pdfIn PDF document text
    • http://reduslim-europa.site/96947403720zhq6u.pdfIn PDF document text
    • https://beluloxepivizor.weebly.com/uploads/1/3/4/1/134131295/451a8e52f86d.pdfIn PDF document text
    • https://cdn.sqhk.co/poxufape/gyCjhn1/xezelitapejusadujojo.pdfIn PDF document text
    • http://it50discount.pro/terawuxusavejapukuxujsxeid.pdfIn PDF document text
    • https://sakuvida.weebly.com/uploads/1/3/0/7/130775714/biretemogetubej.pdfIn PDF document text
    • http://the-english-temple.com/6379269968659uq9.pdfIn PDF document text
    • https://zegilaritapedu.weebly.com/uploads/1/3/1/4/131438092/7116203.pdfIn PDF document text
    • https://mebusogaduvorit.weebly.com/uploads/1/3/0/9/130969439/b17a21ffc07e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/gosidakokenulixazoraten.pdfIn PDF document text
    • http://julifoz.epizy.com/vobedowanekozinalovide.pdfIn PDF document text
    • http://dipulitexaxuz.epizy.com/85707780341.pdfIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/bosch_hammer_drill_1199vsr_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzumeb/wonenejom.pdfIn PDF document text
    • http://vusegax.rf.gd/introduction_to_multivariate_statistics.pdfIn PDF document text
    • http://kokiralasido.epizy.com/89777685264.pdfIn PDF document text
    • https://s3.amazonaws.com/kubafezin/mavubimesosev.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f300.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF300 5144 bytes
SHA-256: ab318ed2b58ddd6e9b2b383c0cdc58c477c253d630948ace17d6e221e9e20a2e
font_01_sfnt_off00010474.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10474 10196 bytes
SHA-256: 121a513473a17290411a9f4a389621415f13e244d19f0d01dd5cd794563f26d1