Malicious PDF — malware analysis report

Static analysis result for SHA-256 80fd0af8616998a5…

MALICIOUS

PDF

79.0 KB Created: 2021-03-17 16:00:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3467f4d6c27415c0261aff8dd353f6be SHA-1: 813f9abc7ef349b82771fae89225d59d1240ba08 SHA-256: 80fd0af8616998a59f0902ed13f3052c4cb29e6048e01e47091335c053da675f
196 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to Weebly-hosted PDFs, suggesting a link farm designed to deceive users. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' indicates the document's content is related to advance-fee fraud, likely using a fake lottery or prize lure. The presence of external URIs and the ML classification strongly suggest malicious intent, likely to redirect users to phishing or malware download sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://ponafet.ru/wix?keyword=download+pubg+apk+and+data
    • https://judozonax.weebly.com/uploads/1/3/1/4/131454501/9b5a3263bf.pdf
    • https://sifobidegi.weebly.com/uploads/1/3/0/8/130874382/3033642.pdf
    • http://zorexodepa.iblogger.org/how_to_introduce_myself_in_english_essay.pdf
    • https://lubozukutiximik.weebly.com/uploads/1/3/4/4/134472848/mazipesenajolor.pdf
    • http://arendaavto.taxi/how_to_convert_au_to_kcal_molmnlox.pdf
    • http://dragonflysagewellness.com/13719608589h7jlj.pdf
    • https://jukamonasob.weebly.com/uploads/1/3/0/7/130740128/tiwuzamobimime_zowigivataj_fuzafijif.pdf
    • https://cdn-cms.f-static.net/uploads/4383794/normal_6045bd000bc2f.pdf
    • https://werofubokira.weebly.com/uploads/1/3/4/6/134656373/5333680.pdf
    • http://tenakororor.iblogger.org/what_does_a_project_manager_do_pmi.pdf
    • https://mavitebe.weebly.com/uploads/1/3/1/1/131163983/7222945.pdf
    • https://kiwogadewabinox.weebly.com/uploads/1/3/4/0/134017617/sidolonijoxada.pdf
    • http://puwaxevajineluk.iblogger.org/66482058515.pdf
    • https://cdn-cms.f-static.net/uploads/4466675/normal_5fd174fbd3689.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gurebuvijo.epizy.com/87677528799.pdf
    • http://mezureda.rf.gd/believers_bible_commentary.pdf
    • http://bitegovaduxigag.epizy.com/biwazadexitoraxusapufuga.pdf
    • http://rofogaxadu.epizy.com/78315601386.pdf
    • http://tunijerizimajej.epizy.com/velesazonebotinaxoko.pdf
    • 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb3b.bin
cb9072f881c1fe0ad8900bbcc5a20a23fabb306412f64e001cac76c2a9509f2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB3B 2952 bytes
font_01_sfnt_off0000f5ca.bin
242f8512419d139fe8107848650c4dbd0b33d9b7410879281354f2af6ee70d0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF5CA 5148 bytes
font_02_sfnt_off0001077c.bin
8be34bfe2705cb7402f3c07d21d0554b5e74a8966f6299a4516beef4e748b9e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1077C 11596 bytes

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