Malicious PDF — malware analysis report

Static analysis result for SHA-256 65d0ef1e5e5302c5…

MALICIOUS

PDF

77.5 KB Created: 2021-03-23 09:41:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ff252bddd134e669017c0fe8f734b8a SHA-1: d10e04d5c55ab70143e2fd70a0b32b0b012a27c2 SHA-256: 65d0ef1e5e5302c5b0567338352ff014ee7f6c79b2d36537eb2057b5337f4d91
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious URL, which is a common tactic for phishing or malware distribution. The document body, though heavily obfuscated, contains keywords related to news and obituaries, suggesting a lure to entice users to click on the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/wix?keyword=star+journal+rhinelander+obituaries
    • http://sikevemekoma.mypressonline.com/sports_clothes_vocabulary.pdf
    • https://cdn.sqhk.co/bujasugawo/cpxyW3P/xebebitis.pdf
    • https://fepuluji.weebly.com/uploads/1/3/4/8/134871890/ludifugorifetep.pdf
    • https://getiwojaxewife.weebly.com/uploads/1/3/4/0/134012456/sukojo-xefugivumaberit-rifekifarogib.pdf
    • http://kiparegazeratax.getenjoyment.net/9794143398.pdf
    • http://kolekewoni.mywebcommunity.org/19714300188.pdf
    • https://gitosupogule.weebly.com/uploads/1/3/2/7/132741155/dac3d.pdf
    • https://dizogesutupini.weebly.com/uploads/1/3/4/6/134631076/9821050.pdf
    • https://cdn.sqhk.co/dutumutu/id3hanH/counterproductive_work_behavior_theory.pdf
    • https://cdn.sqhk.co/xalurubizud/nxtgfII/sample_bid_bond_request_form.pdf
    • http://xuxetosufuzo.getenjoyment.net/jobivomuwaloniwowofibo.pdf
    • http://albl.ru/free_sheet_music_beethoven_fur_elise166oj.pdf
    • https://kotasixunepa.weebly.com/uploads/1/3/0/7/130776076/4534c5.pdf
    • http://mipexalazalekab.getenjoyment.net/7_merveilles_du_monde_antique.pdf
    • http://dfwshootersupply.com/70790349048q2e1e.pdf
    • https://cdn.sqhk.co/keropolor/dWBhjUR/toggle_meaning_minecraft.pdf
    • http://pijojavoto.mygamesonline.org/chain_rule_derivative_worksheet.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/xojafemori/ketovulugib.pdf
    • https://s3.amazonaws.com/dikobepibelun/rafilorafagemev.pdf
    • https://s3.amazonaws.com/winumigutam/netapix.pdf
    • https://s3.amazonaws.com/lowebemuwojiso/27139130687.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edcc.bin
76b84c54db8156acd7d0dbac4118c25e85db0bfdd8aa1e1fb412e17c2d342866
pdf-font-stream PDF embedded font (sfnt) at offset 0xEDCC 5232 bytes
font_01_sfnt_off0000ff87.bin
ca8269ad9f19c60d91ee84ae17b66af760e3b31fb392de34817010721bb5f33f
pdf-font-stream PDF embedded font (sfnt) at offset 0xFF87 12092 bytes