PDF malware analysis — malicious · 4af72b1e013e939b

MALICIOUS

PDF

70.0 KB Created: 2021-01-13 19:39:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05

MD5: 4dc711f8808df8a3b4bfe3f8ab57efd9 SHA-1: b8e773349c6f73d10dfa364de0daa5657ae7c374 SHA-256: 4af72b1e013e939b0f5b4e4584d0f2d2d326d40875277ba583f8fe45c2f066ad

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF containing an embedded URL that redirects to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically phishing or malware distribution. The document body, though heavily obfuscated, contains text related to game content, likely a lure to encourage user interaction with 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://traffnew.ru/123?utm_term=disgaea+4+complete+plus+unlock+classes PDF link annotation
- https://sozaruterir.weebly.com/uploads/1/3/0/7/130738534/natobitukuwunavo.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4390660/normal_5f9176aa5855b.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4464720/normal_5fc95da6e1d7b.pdfIn PDF document text
- https://webuwoterin.weebly.com/uploads/1/3/4/5/134589655/vasetizoluk_keditiwafokenex_latiroliniz_duwonufodug.pdfIn PDF document text
- https://cdn.sqhk.co/raxoxawupej/fMwiihb/22694201330.pdfIn PDF document text
- https://cdn.sqhk.co/wujukipako/kpKUsjb/shell_v_power_racing_fuel_discount.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/wesezuzuvalirik/tidifonaboseburezadaxar.pdfIn PDF document text
- https://s3.amazonaws.com/xisakazelelinim/ganarex.pdfIn PDF document text
- https://s3.amazonaws.com/sinamozagemoger/sazuvogetunepibo.pdfIn PDF document text
- https://s3.amazonaws.com/tugumeb/home_budgeting_spreadsheet.pdfIn PDF document text
- https://s3.amazonaws.com/lurutopobi/dujavizi.pdfIn PDF document text
- https://s3.amazonaws.com/lowuwofuxali/genealogy_chart_template_word.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000d37c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD37C	5308 bytes
SHA-256: `0c76ea6ed8764340edcb652a8f1dbd9e8ba8784f5bed6ca10e27fdba55abbec4`
`font_01_sfnt_off0000e592.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE592	11140 bytes
SHA-256: `1b6e4caae2317a4895ee621c0dcc3f27eeffb94ea0ba6c85ae06132be35990d5`

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