Malicious PDF — malware analysis report

Static analysis result for SHA-256 742b4125581e2ebf…

MALICIOUS

PDF

64.3 KB Created: 2021-03-24 21:29:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 2775f3e925e56c848c507e812eed0a2a SHA-1: c928ba99b690a81eaace434f34c2b6671b4892c3 SHA-256: 742b4125581e2ebf86ab862be6252dfd611cd7c958d8a80396d79c5ba6bdfb24
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, with a prominent one disguised as a Craigslist car advertisement. This technique, combined with the high ML score and ClamAV detection, strongly suggests a phishing or malware distribution attempt. The embedded URLs likely redirect to malicious content or further stages of an attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jumiwimov.ru/wix?keyword=craigslist+cars+en+orlando+fl PDF link annotation
    • http://wipalogazagak.22web.org/nuxonopusubebolil.pdfIn PDF document text
    • https://kasipuxatupar.weebly.com/uploads/1/3/5/9/135966953/fcf025f.pdfIn PDF document text
    • https://katabeguravaka.weebly.com/uploads/1/3/1/4/131407194/jomewajoneto.pdfIn PDF document text
    • https://kewenarizifosiz.weebly.com/uploads/1/3/6/0/136092989/navaferixe_nijesuf.pdfIn PDF document text
    • https://zedalikekotax.weebly.com/uploads/1/3/1/1/131163955/ketogemen.pdfIn PDF document text
    • https://tabupuja.weebly.com/uploads/1/3/4/6/134647436/a254a33b06.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ef9935f7-a918-44a1-999f-f1d50a45e4a7.filesusr.com/ugd/b463f2_e0d64dc73613473c8f642ad46a664239.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/silubebebefuju/how_do_i_connect_my_phone_to_my_qkk_mini_projector.pdfIn PDF document text
    • https://s3.amazonaws.com/xojafemori/66052033100.pdfIn PDF document text
    • http://weverikovufom.rf.gd/19469791436.pdfIn PDF document text
    • https://s3.amazonaws.com/somisilegex/colorectal_cancer_screening_guidelines_2018_canada.pdfIn PDF document text
    • https://s3.amazonaws.com/kasuwevovog/jifagipaka.pdfIn PDF document text
    • https://s3.amazonaws.com/farowug/davowegi.pdfIn PDF document text
    • https://s3.amazonaws.com/waxegatulo/lukorobi.pdfIn PDF document text
    • https://s3.amazonaws.com/xakusineba/16500809662.pdfIn PDF document text
    • https://737bf953-b780-43bc-8af0-312ed5328a40.filesusr.com/ugd/017c44_3807766fbff5482e821252ce26b1870c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wujixus/sony_wireless_headphones_model_mdr-rf985r_manual.pdfIn PDF document text
    • http://pasazaxara.rf.gd/44377227626.pdfIn PDF document text
    • https://s3.amazonaws.com/bufexa/tiwubakewawuwifig.pdfIn PDF document text
    • http://lugirike.epizy.com/tabaxux.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/61724124474.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/ziriwosabotusij.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.

FilenameKindSourceSize
font_00_sfnt_off0000c1aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1AA 5092 bytes
SHA-256: be4011466bc346b30c378cd5fe78d509ba438d3b059641948632de7b0bfa4082
font_01_sfnt_off0000d304.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD304 9208 bytes
SHA-256: 74b9e260e4c52a14a3968d0bedcad9fa3999b764ae2079eaa0519de2215aadb5

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