Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a77885bc7157419…

MALICIOUS

PDF

269.3 KB Created: 2021-03-29 21:18:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 92a567440d54db5244c7f3931ca9c7cf SHA-1: d765e32808cf9f63f714191262a8a7f182003e41 SHA-256: 3a77885bc71574190b8ab9c1a2ecac5cf3018eee3b956800d18641e6a8804f51
156 Risk Score

Malware Insights

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

The ML classifier and ClamAV detection strongly indicate maliciousness. The critical heuristic for brand-impersonation credential phishing, specifically impersonating Amazon, combined with numerous embedded URLs pointing to PDF files, suggests the primary goal is to lure users into a phishing site. The document body, though heavily obfuscated, contains keywords related to an Amazon report, reinforcing the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9857

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
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://titumakusijuvap.weebly.com/uploads/1/3/4/3/134353199/ee5f72bf5c.pdf.
  • 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=amazon+annual+report+2020+16+pdf PDF link annotation
    • http://confirmyourverifiedbadge.com/154122519809ob7m.pdfIn PDF document text
    • http://meetsoda.pro/19272698545zkq82.pdfIn PDF document text
    • http://tekabufoj.22web.org/html5_thumbnail.pdfIn PDF document text
    • http://vukofalizukulo.22web.org/62866695661.pdfIn PDF document text
    • https://titumakusijuvap.weebly.com/uploads/1/3/4/3/134353199/ee5f72bf5c.pdfIn PDF document text
    • http://jobware.pro/how_do_you_set_a_woods_outdoor_timerg3zjq.pdfIn PDF document text
    • https://rizofuruw.weebly.com/uploads/1/3/0/8/130873790/885ef14.pdfIn PDF document text
    • http://creditscorefix.info/que_es_educacion_fisica_segun_diferentes_autores1t3ur.pdfIn PDF document text
    • http://noverst.xyz/coco_full_movie_hd_in_hindi_dubbed_free_downloadc9vwv.pdfIn PDF document text
    • https://gitiritibew.weebly.com/uploads/1/3/1/4/131483488/1fa2ea5eb1f.pdfIn PDF document text
    • https://sikegupul.weebly.com/uploads/1/3/4/6/134681682/vadovodudisorot-zelosu-nenapa.pdfIn PDF document text
    • https://tuxibefogeja.weebly.com/uploads/1/3/4/3/134359070/3792856.pdfIn PDF document text
    • https://nojabepeteguki.weebly.com/uploads/1/3/4/6/134669956/biviwisipowuti.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://770603ce-cae8-48b7-b4e8-6e15b9dac1cd.filesusr.com/ugd/e975af_42e749991a6546bba616a679e6cd5d9e.pdf?index=trueIn PDF document text
    • https://7722bba5-72ad-4d15-a72d-9ce9fbdcf1b5.filesusr.com/ugd/772ad5_ac7dc8d043084d6ea86fb59a61b0f527.pdf?index=trueIn PDF document text
    • http://sitidex.epizy.com/gosarerunuzok.pdfIn PDF document text
    • https://44407f20-7244-4107-9544-84d8151b6f9a.filesusr.com/ugd/8508de_bb4cca99b53b4b279e8d8802863103c5.pdf?index=trueIn PDF document text
    • https://47c0d0ed-94e3-447f-940a-e265262d053f.filesusr.com/ugd/a43ec6_e70b9d8395fb496692d5a8d39be0d79f.pdf?index=trueIn PDF document text
    • https://7915398d-c9c2-4241-abdb-40cf742e4b8d.filesusr.com/ugd/d4df0f_e7404e44b0324b1a9422f62a93bdf9dc.pdf?index=trueIn PDF document text
    • https://a8a2d6b8-6248-42a0-90a4-e25e421c2e59.filesusr.com/ugd/f63f29_83a1e10b198849b9b9d8d774108bd6d8.pdf?index=trueIn PDF document text
    • https://34e2f0dc-0077-42bd-a047-efa2502e92af.filesusr.com/ugd/8a05ec_ba27404b2e334bbaad027e88cf9d43a0.pdf?index=trueIn PDF document text
    • https://6bc61794-ec17-45f1-96eb-8bed4cd57308.filesusr.com/ugd/217b8a_318568c90e1745528d0164915f0bdf50.pdf?index=trueIn PDF document text
    • http://balepififeri.rf.gd/91240954188.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003d6d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3D6D5 5528 bytes
SHA-256: 5652ec8345f2a22f5344b0ed4cfb07a05347022c27f30db77b076c102aef55e3
font_01_sfnt_off0003e998.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3E998 11452 bytes
SHA-256: 4d33f47067043e4f2180d0a216351a657b3b9d8c254b68c60d125b0be46b69d6
font_02_sfnt_off000410b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x410B4 16208 bytes
SHA-256: 1d4d671ae502080d93142a7eeda7a219ae6747fc4e119e8b75dad7192e420eff

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