PDF malware analysis — malicious · 56fdd1ee7b387452

MALICIOUS

PDF

92.3 KB Created: 2021-02-21 10:17:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15

MD5: 964150eafeb2840653bf8963a2ccea15 SHA-1: dfafa1a8d73597bac8d3a776c4b6d4a8c1013f82 SHA-256: 56fdd1ee7b3874529f04cbaddd6143687edf33ded465f064809e248211bac92e

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was identified as malicious by ML classifiers and ClamAV. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO manipulation tactic. One of the primary links points to 'baarspo.ru', which is likely an attempt to redirect the user to malicious content or a phishing page. No scripts were extracted, but the PDF structure and heuristics indicate a malicious intent to redirect users to external sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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.
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://baarspo.ru/strik?utm_term=cast+of+after+2019+tessa%2527s+mum PDF link annotation
- http://rapegutuxipik.22web.org/under_the_dome_english_full_movie_watch_online.pdfIn PDF document text
- https://zageporipemaza.weebly.com/uploads/1/3/4/5/134507549/jisira.pdfIn PDF document text
- https://sagetiruguw.weebly.com/uploads/1/3/0/8/130814856/jiguzu_zijozawuluje_nozutizom.pdfIn PDF document text
- https://vowabogebem.weebly.com/uploads/1/3/0/7/130775978/fefake.pdfIn PDF document text
- http://fofipaminek.iblogger.org/60724451737.pdfIn PDF document text
- https://leresawukulet.weebly.com/uploads/1/3/1/3/131384076/158fa092057d.pdfIn PDF document text
- https://nugilura.weebly.com/uploads/1/3/5/3/135317706/mejapodabaketegeb.pdfIn PDF document text
- http://ragukir.iblogger.org/windows_10_enterprise_1903_language_pack.pdfIn PDF document text
- https://finaxapiw.weebly.com/uploads/1/3/5/3/135301963/pofijakelazudon-tinutenun-morep-magujodar.pdfIn PDF document text
- http://rakuropa.iblogger.org/oracion_al_espiritu_santo_por_los_enfermos_de_cancer.pdfIn PDF document text
- http://womenalikumat.22web.org/sportline_gps_watch_manual.pdfIn PDF document text
- https://wotipufa.weebly.com/uploads/1/3/1/0/131069738/8925561.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4484356/normal_6012b6e9751ba.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4426418/normal_60138745c4e9b.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://sosejelufati.epizy.com/jidixodatiwomuxodali.pdfIn PDF document text
- http://zumojuluru.epizy.com/animation_software_for_free_no.pdfIn PDF document text
- http://firotiz.epizy.com/japubapakinij.pdfIn PDF document text
- http://risawanidav.epizy.com/punapizujimobezew.pdfIn PDF document text
- http://sabenimuzu.rf.gd/axl_full_movie_dual_audio.pdfIn PDF document text
- http://xewenofos.epizy.com/38417951367.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00011f0e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11F0E	5300 bytes
SHA-256: `ada3b491347bfad543f089b2634ea9fc21323d092efd532314ad80382b740746`
`font_01_sfnt_off000130fa.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x130FA	2236 bytes
SHA-256: `172ed87a6daa78056baaf52b4340ff4475bb52e320083c0f87bfdd782f84d016`
`font_02_sfnt_off00013b3e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13B3E	11660 bytes
SHA-256: `e8691b0cce1cc32578c3b8beac65be5fcd14e23b816ab996779dc1fbbef3d2e2`

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