PDF malware analysis — malicious · f05247df365ca5a2

MALICIOUS

PDF

72.2 KB Created: 2021-03-28 08:08:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20

MD5: 67c07cb53104bcf37f286f621a2de508 SHA-1: c63495466a6fe5504e658621c06aeb1a9f4737bf SHA-256: f05247df365ca5a2796e2f2206bd13922885c2c1d376f8a045c42b2b67294bea

196 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, with a significant portion pointing to a redirector URL (https://zajinet.ru/strik?utm_term=dejame+que+te+cuente+restaurante). This indicates a likely phishing or malware distribution attempt, leveraging SEO tactics to appear legitimate. The ML classifier and ClamAV detection strongly support the malicious verdict. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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.
Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK

PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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://zajinet.ru/strik?utm_term=dejame+que+te+cuente+restaurante PDF link annotation
- https://bokowamimufap.weebly.com/uploads/1/3/2/7/132712050/60c4b0a2a8095.pdfIn PDF document text
- https://fixafaren.weebly.com/uploads/1/3/0/7/130738550/8911039.pdfIn PDF document text
- https://pagopejej.weebly.com/uploads/1/3/5/3/135315805/f9dbf819c6.pdfIn PDF document text
- https://nonovobuzodeku.weebly.com/uploads/1/3/5/3/135348203/monevezuf.pdfIn PDF document text
- https://zivumipit.weebly.com/uploads/1/3/4/3/134317334/4984235.pdfIn PDF document text
- https://batuginuvitewaw.weebly.com/uploads/1/3/4/0/134013132/1e3df44fe.pdfIn PDF document text
- https://kiragidemi.weebly.com/uploads/1/3/0/7/130775435/befodefulekezifewi.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/26c590b3-c3ae-4ca0-ae7a-7c1a93ce8944/how_to_reset_my_mobi_thermometer.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9a3d804d-ecc3-455e-9948-0471dc7015a2/kiwulesidamibog.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ea0ab71d-ea23-4219-a51f-003fa64bf9e9/vizilikivijufomipo.pdfIn PDF document text
- https://s3.amazonaws.com/bulalowisu/lojogim.pdfIn PDF document text
- https://s3.amazonaws.com/xajowu/xogofano.pdfIn PDF document text
- https://s3.amazonaws.com/rorives/19446804478.pdfIn PDF document text
- https://s3.amazonaws.com/pibajuwi/34445725872.pdfIn PDF document text
- https://s3.amazonaws.com/tufujifinobiro/pokemon_heart_gold_cheats_desmume_walk_through_walls.pdfIn PDF document text
- https://s3.amazonaws.com/wakuzidi/rubijonexedule.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/0b0bccf1-9243-4190-b846-3e59fb811962/the_stranger_author_harlan_coben.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1539482d-5897-4b3e-9eb9-4a0ff5c72f4b/what_is_the_weight_limit_on_graco_pack_and_play_bassinet.pdfIn PDF document text
- https://s3.amazonaws.com/rikolesafuwofar/how_can_we_help_save_sea_otters.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_off0000d8b0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD8B0	5112 bytes
SHA-256: `151b12ec6e01dd30666d36d640dda16a0712a1e63d3b02d6804d6c8ede188a83`
`font_01_sfnt_off0000ea0a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEA0A	12236 bytes
SHA-256: `0637f2e6f2db49be4421022a9a00f5565f735065c2b352ecc1b794135701613a`

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