PDF malware analysis — malicious · 301543e912dcd8fa

MALICIOUS

PDF

92.9 KB Created: 2021-04-04 06:29:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23

MD5: 36c3e0912e8441ab4300163333b59e7b SHA-1: d3248ecda47fa6152522c35f0b442d2b80113397 SHA-256: 301543e912dcd8faf430a4221354428942efcebb6197aaa89a998cf536eb30c2

146 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. The document's content, though heavily obfuscated, suggests a lure related to 'army m4 weapons qualification card form'. The presence of numerous external URIs, including one on disposable hosting, indicates an attempt to redirect the user to malicious sites. The heuristic 'SE_CALLBACK_LURE' further suggests a callback phishing or tech-support scam pattern.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

Heuristics 6

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
Callback phishing phone lure medium SE_CALLBACK_LURE

Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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://nipisod.ru/strik?utm_term=army+m4+weapons+qualification+card+form PDF link annotation
- https://static.s123-cdn-static.com/uploads/4495973/normal_600835b256152.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4414495/normal_6068e1de8cde7.pdfIn PDF document text
- http://waxedeb.getenjoyment.net/blood_type_o_food_chart.pdfIn PDF document text
- http://beritox.medianewsonline.com/80716270116.pdfIn PDF document text
- http://jutidewolojura.mypressonline.com/suvigixoma.pdfIn PDF document text
- http://falorilipeb.mywebcommunity.org/t-fal_optigrill_xl_costco.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4475383/normal_604009fd963b5.pdfIn PDF document text
- http://vezokikawelin.iblogger.org/job_resignation_letter_sample.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4391621/normal_5fcc8f0e64ff3.pdfIn PDF document text
- http://vorusobowa.66ghz.com/23257461295.pdfIn PDF document text
- http://riwotivadejud.sportsontheweb.net/nutrinidrink_powder.pdfIn PDF document text
- http://fesimekipi.iblogger.org/94688600263.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369150/normal_6016b48241bfa.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4470380/normal_6006f9ce18a89.pdfIn PDF document text
- http://mogitumo.iblogger.org/adventures_of_tom_sawyer_gutenberg.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://wilafavibu.rf.gd/learning_german_alphabet.pdfIn PDF document text
- http://pasigajixivete.epizy.com/whatsapp_status_song_sohnea.pdfIn PDF document text
- http://debalipusafuj.epizy.com/cinta_itu_buta.pdfIn PDF document text
- http://gorefoverotiw.epizy.com/vagevuvebogapuva.pdfIn PDF document text
- http://xoxijapemekiseg.epizy.com/workforce_aptitude_test_questions.pdfIn PDF document text
- http://legumanob.rf.gd/dedoxasanol.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000113db.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x113DB	5696 bytes
SHA-256: `a6ac454ec138a24b24be3cf56ae63e93e28f518052199c61095622158558256f`
`font_01_sfnt_off0001274d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1274D	12192 bytes
SHA-256: `9fd02240c3d24af8ebea639d1e186f6b06626521d12c3d330814a03b78b0d796`
`font_02_sfnt_off000150f2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x150F2	16140 bytes
SHA-256: `159427b32ed66bfbde86def5e6c2992bde67dfb25400c4000a37c9b59b949b61`

Open this report in the interactive analyzer, or submit your own file for analysis.