PDF malware analysis — malicious · 5ac961faa4959506

MALICIOUS

PDF

72.4 KB Created: 2021-03-04 02:47:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 0cb2138cfd29a8156983847c6fdb8a02 SHA-1: c4a81eedeff7f7d94d4de9d42970e64132fbcb48 SHA-256: 5ac961faa4959506f6ba90d04161d4018c9f8f2d2198c5137982d2477144f65e

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, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF as malicious. The document body, though heavily obfuscated, contains text related to "imagery in to kill a mockingbird" and the wkhtmltopdf application, suggesting a lure to a phishing or malware distribution site.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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://xezojetit.ru/wix?keyword=imagery+in+to+kill+a+mockingbird
- http://raxewaponoxiv.mygamesonline.org/retagizaxerenefatog.pdf
- http://xevamoz.mygamesonline.org/xiwasafofus.pdf
- https://cdn.sqhk.co/xiladuxe/B0cmhbt/99880361142.pdf
- https://cdn.sqhk.co/fuzokikili/idhaidd/fosilakididorubabigiluj.pdf
- https://cdn-cms.f-static.net/uploads/4374847/normal_6014021edfe33.pdf
- https://cdn.sqhk.co/momujolo/djcp56O/31332880365.pdf
- https://static.s123-cdn-static.com/uploads/4408324/normal_6008c1029d9d2.pdf
- https://cdn-cms.f-static.net/uploads/4366010/normal_602d42a399490.pdf
- https://static.s123-cdn-static.com/uploads/4454543/normal_5ffbd2fadf8f9.pdf
- https://cdn.sqhk.co/zexetiminav/jiuiePr/tameja.pdf
- https://cdn.sqhk.co/gisepavuv/bjj61ao/angry_birds_movie_2_cast_jojo_siwa.pdf
- https://cdn-cms.f-static.net/uploads/4483856/normal_60368a3bc835b.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/bededuxotulapil/causal_and_noncausal_system_in_z_transform.pdf
- https://s3.amazonaws.com/luramamelolem/budgeted_cash_flow_statement_format.pdf
- https://s3.amazonaws.com/feseni/boss_movie_1080p_video_song.pdf
- http://liroporuki.myartsonline.com/2601861583.pdf
- http://kapirexazi.onlinewebshop.net/canon_vixia_hf_g30_battery.pdf
- https://s3.amazonaws.com/belapawerezuju/zevazonojawivupebususetet.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000dfd3.bin` `caf61e16b329916e361daba78f1c7ed4fc8503a820aad41637203f8cdeb081ca`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDFD3	5324 bytes
`font_01_sfnt_off0000f1dd.bin` `83353deb9f74c00ba69f915ac27f577e8fec49488b0d4535f9e2750a096373a6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF1DD	10120 bytes

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