PDF malware analysis — malicious · e946e8fc7ad5ce0e

MALICIOUS

PDF

71.3 KB Created: 2021-03-27 23:37:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20

MD5: 592a9e741dff3d70fc12381b004ab1d2 SHA-1: b10e515a434ca1ead110a47fc18a67a2d586227a SHA-256: e946e8fc7ad5ce0eb608f7eeb90a9ea55fd3b1eca7f200928dc62fe03315fd4a

196 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, many of which point to SEO-optimized PDF files on various domains, suggesting a link farm or phishing operation. The document body, though partially corrupted, indicates a lure related to a "Ny state commercial driver's manual." The presence of PDF_SEO_LINK_FARM and PDF_SEO_UTM_REDIRECTOR_LINK heuristics strongly supports this attack pattern. While no scripts were explicitly extracted, the nature of the PDF and the heuristics suggest it's designed to redirect users to malicious or deceptive 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://leonvi.ru/wix?keyword=ny+state+commercial+driver%2527s+manual PDF link annotation
- http://reabook.online/jurumakajokuxugasekesulob9tumx.pdfIn PDF document text
- http://axecheat1.xyz/kusosivipurojujakni3gv.pdfIn PDF document text
- https://kibutabez.weebly.com/uploads/1/3/4/4/134438896/gusawuxazuxunad_nutowuximega_pefamezagu.pdfIn PDF document text
- http://defi-bet.world/82795607325c3rtz.pdfIn PDF document text
- https://xapitutas.weebly.com/uploads/1/3/0/8/130813648/zexaliravap_gatuwuxituwe.pdfIn PDF document text
- http://buybritishcat.com/manual_del_apostolado_mundial_de_fatimaffv5o.pdfIn PDF document text
- http://oneitstore.info/touch_vpn_for_windows_7cmids.pdfIn PDF document text
- https://toxuweraf.weebly.com/uploads/1/3/4/1/134108638/piluka.pdfIn PDF document text
- http://businesshelpservice.com/what_is_the_significance_of_the_title_name_j_alfred_prufrock51da9.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://s3.amazonaws.com/donake/17309683362.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4ea4c33a-d475-4738-96d8-445d8a266673/mafuwowuraxep.pdfIn PDF document text
- https://s3.amazonaws.com/timituvupame/how_to_get_error_codes_on_whirlpool_washer.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b358d154-4c77-4090-9a19-a05a2b91c762/david_hume_an_enquiry_concerning_human_understanding_section_2.pdfIn PDF document text
- https://s3.amazonaws.com/temujonuwu/74767743162.pdfIn PDF document text
- https://s3.amazonaws.com/murudute/los_renglones_torcidos_de_dios_mago_de_oz.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2247f6be-5ba2-425f-9aef-f6b11139cdd0/dance_music_1990_hits_playlist.pdfIn PDF document text
- https://s3.amazonaws.com/nazekisigiduz/fonodimet.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_off0000cd16.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCD16	5132 bytes
SHA-256: `ef26c55254c832ee18bc1eaef5eaeda69a31c040a76fc317c206a577ca55fa4b`
`font_01_sfnt_off0000de7c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDE7C	10368 bytes
SHA-256: `2402bdcf9719de4dc6588bc354fab4bf3695b24e76f9e551d9f50547e56d906c`
`font_02_sfnt_off0001020d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1020D	4324 bytes
SHA-256: `d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378`

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