PDF malware analysis — malicious · ad1f02e6c8c43d43

MALICIOUS

PDF

82.9 KB Created: 2021-04-14 21:57:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: e3e25fa13a0fa8e7ce4e5e8e2561cae1 SHA-1: 710facae173f8823df10d0cff575715b2f5a772a SHA-256: ad1f02e6c8c43d4394210304dd87c3f42f22b381dfc699ac10484b5d545c2a9a

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document that contains an embedded URL pointing to a suspicious domain. Heuristics indicate it's a phishing or trojan PDF. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body, though obfuscated, appears to contain metadata related to a manual, which is likely a lure.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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://jacksth.ru/strik?utm_term=wayne+dalton+torquemaster+1+manual
- https://static.s123-cdn-static.com/uploads/4500417/normal_5ffd6a9200370.pdf
- https://cdn.sqhk.co/pazibafax/gctiiqW/sedisujijoja.pdf
- http://xeberok.getenjoyment.net/46655950384.pdf
- https://cdn.sqhk.co/gapekozuwa/bjgi9GL/closeness_in_a_short_sentence.pdf
- https://cdn-cms.f-static.net/uploads/4379626/normal_6034c1d320bea.pdf
- https://cdn.sqhk.co/panajevem/fjhhbij/the_roman_empire_map_worksheet_answer_key.pdf
- http://memowelubi.mygamesonline.org/what_does_shatter_mean.pdf
- https://cdn-cms.f-static.net/uploads/4383464/normal_602ca0bdaa1b1.pdf
- https://cdn-cms.f-static.net/uploads/4443576/normal_6061ac5a19ad3.pdf
- https://cdn-cms.f-static.net/uploads/4389792/normal_6044755492c80.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- http://zipokuxabatu.rf.gd/74443836112.pdf
- https://uploads.strikinglycdn.com/files/0eb25ae1-2bad-4d5d-b4e3-05b829500812/did_allie_and_noah_die_at_the_end_of_the_notebook.pdf
- http://begujewirefe.myartsonline.com/vexelipokadobora.pdf
- http://rawisedifagi.epizy.com/zoleg.pdf
- https://uploads.strikinglycdn.com/files/940791a1-857e-48a0-8c6f-92ac193de10d/88507706018.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000fc76.bin` `e5cc73a21f66d7ea054bf6af74fd0b6cce03751ccdd178785b3fb72b7a6e039f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFC76	5096 bytes
`font_01_sfnt_off00010dc1.bin` `890bac08aa496c355554cb0f239592739f919a1ef034332e6bb82cfea0821c89`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10DC1	10184 bytes
`font_02_sfnt_off00013072.bin` `7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13072	4324 bytes

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