Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcd6f99227ea61fe…

MALICIOUS

PDF

90.9 KB Created: 2021-04-26 12:48:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 33378e9da5918b5537bc202ad04d7c37 SHA-1: 558e3bb9c514ff0ab6b73ec2657dfd28cb39b4d5 SHA-256: fcd6f99227ea61fe2410385bb54454389e9bac3fae1c00394582c0227541ca0a
126 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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://vilenefex.ru/strik?utm_term=after+we+collided+full+movie+eng+sub+fmovie PDF link annotation
    • http://kedepoba.sportsontheweb.net/74299040492.pdfIn PDF document text
    • https://cdn.sqhk.co/delotijuw/eMigjh3/roferanexafarezukij.pdfIn PDF document text
    • https://welogedaxo.weebly.com/uploads/1/3/3/9/133997457/48391cb099.pdfIn PDF document text
    • https://zakepanitug.weebly.com/uploads/1/3/5/9/135977879/7997708.pdfIn PDF document text
    • http://optalpha.com/titujokajufevbxo07.pdfIn PDF document text
    • http://arenaprobet.com/movokatokubottlj.pdfIn PDF document text
    • https://bodokevusigow.weebly.com/uploads/1/3/2/7/132740435/rogofugini_belanomaxarinu_pasotipe.pdfIn PDF document text
    • http://yewes.fun/aluminium_sheet_gate_design498re.pdfIn PDF document text
    • https://popupobapovuzus.weebly.com/uploads/1/3/4/0/134012290/lebagaj.pdfIn PDF document text
    • http://marketitaly.info/7549194680673p3t.pdfIn PDF document text
    • https://cdn.sqhk.co/netimawifes/9jbk93K/38277048380.pdfIn PDF document text
    • http://cloudmarket.website/fubogiwedesaburabamuxassxq8c.pdfIn PDF document text
    • http://x-bionic.shop/zegoferi8zdw0.pdfIn PDF document text
    • https://sinitilelimokiz.weebly.com/uploads/1/3/4/3/134348988/daganud.pdfIn PDF document text
    • http://suporefebakibur.mygamesonline.org/risk_factors_of_type_2_diabetes.pdfIn PDF document text
    • http://beautysss.site/blade_craft_mod_apk_unlimited_moneyr2g7q.pdfIn PDF document text
    • http://zumanidoxup.medianewsonline.com/pevevu.pdfIn PDF document text
    • http://cmbclientes.com/palezenuwivitujolipitl3cv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/53b79221-ca8c-4e26-a5fe-6f86fa444fe6/can_you_cook_pancakes_in_a_waffle_maker.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48aa7ab2-4e65-4abe-86df-0a94fa94b77e/88513148378.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0612c010-3231-4ba9-97e7-b7775e396769/benojurozuwarijaxujufezer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19006ce3-b346-42de-a795-738727bad9cf/1116966263.pdfIn PDF document text
    • http://palexibibiw.atwebpages.com/juxivejejebibet.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f79d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF79D 5296 bytes
SHA-256: 9a7a2eb543cb583afe9dc0ab612d9c3109fe7eef4e27a995c0bfafb2a9747736
font_01_sfnt_off0001099b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1099B 2316 bytes
SHA-256: 1f4ab3dc7109b145c55e010206da44dc5b766b523135897298ed1d8498437569
font_02_sfnt_off0001138a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1138A 11504 bytes
SHA-256: 31122228489326049a905c58f6bc189dd19e01a29121d61f11200475fe89d11a
font_03_sfnt_off00013a31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A31 16068 bytes
SHA-256: e7273338525a866f49bd556f13a0e46ce1e8513f85f175d9d987aa1f8b89adb9
font_04_sfnt_off00014ed5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14ED5 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e