Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc1627ce7116e51d…

MALICIOUS

PDF

77.8 KB Created: 2021-03-10 03:56:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 328387b7352b940e1cfd121c5e30152f SHA-1: a60fbb42f5c4fac4c22260cd4e60c28dc3465a9b SHA-256: bc1627ce7116e51db475e64c4a170fc3d67eb72a642861d26b0fb04a8208247b
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains embedded URLs pointing to suspicious domains, with one URL specifically appearing to be a link farm designed to redirect users. The document body, though partially corrupted, suggests a lure related to a movie title, which is a common tactic for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/aws?utm_term=the+secret+life+of+pets+2+full+movie+in+hindi+online PDF link annotation
    • http://tipofeliluget.medianewsonline.com/bifodixofedesovot.pdfIn PDF document text
    • http://kewomoza.iblogger.org/calories_in_bojangles_sausage_egg_biscuit.pdfIn PDF document text
    • http://puzofogerexiwi.22web.org/76365704320.pdfIn PDF document text
    • http://golepikoxeware.22web.org/48384659932.pdfIn PDF document text
    • https://xusumenebob.weebly.com/uploads/1/3/4/4/134478057/loxupituragefaki.pdfIn PDF document text
    • http://finomimetafix.sportsontheweb.net/ti_84_ce_used.pdfIn PDF document text
    • https://sapuzexa.weebly.com/uploads/1/3/5/3/135348006/6910088.pdfIn PDF document text
    • http://lnstagram-helps-contact.com/how_to_pass_12th_physics2hft2.pdfIn PDF document text
    • http://f1l3download.site/3786477479hxqjn.pdfIn PDF document text
    • https://gojufoviwovefu.weebly.com/uploads/1/3/4/5/134515133/tavimon.pdfIn PDF document text
    • http://tactical-jacket-sale.shop/936563951261z4sq.pdfIn PDF document text
    • https://gutusalewizewuj.weebly.com/uploads/1/3/1/8/131871657/ledakek_lagufozo_gigudapij_ralogagaketof.pdfIn PDF document text
    • http://ipatovaalena.ru/szckte_anlamnqih9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dosatetirudipu.epizy.com/sevegolupabatimadaporo.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/fowutosu.pdfIn PDF document text
    • http://pofiwun.rf.gd/roradoduzaviwilopugajige.pdfIn PDF document text
    • http://gemixeferakin.rf.gd/pomodoro_technique.pdfIn PDF document text
    • http://donarup.rf.gd/65857722544.pdfIn PDF document text
    • https://s3.amazonaws.com/rewepalazamiso/wufotijiletemut.pdfIn PDF document text
    • http://limufij.myartsonline.com/46423179065.pdfIn PDF document text
    • http://limirosu.rf.gd/13089692607.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/gorole.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_off0000f0ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0EC 5324 bytes
SHA-256: 803e3c659d6e61bb18f3ac9aa88354654438fa124b3cde869ff16e413e1dd551
font_01_sfnt_off000102e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102E9 11512 bytes
SHA-256: 46b49c02aaa036b7d30496eb7f47a20d04a9ee165a778913ca193fccb20a335b

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