Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b8a0145de310543…

MALICIOUS

PDF

43.5 KB Created: 2020-09-17 05:36:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 4605d561a2d6b8e4fc8f8870b4571b42 SHA-1: 2891d788d20df2ed5e26347b63ee1dd1392b422d SHA-256: 8b8a0145de310543eda56bd9bf7b1c81df64fae831ea1852344084d651931476
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, likely as part of a phishing or scam campaign. The ML classifier strongly indicated maliciousness, and the PDF structure suggests it's designed to host a link farm. The document body itself contains the malicious URL and a lure related to a "sling tv apk hack unlimited".

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.club/wix?keyword=sling+tv+apk+hack+unlimited In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7573/7502/files/kuwulida.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8064/6807/files/26646006768.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4608/2472/files/95385562369.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4874/6651/files/wijanaku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4405/1864/files/78438388840.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3794/1160/files/tamil_meaning_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9142282406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3557/4943/files/74845180038.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pewugokujugiwiburonanas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0153/4873/files/32933826949.pdfIn PDF document text
    • https://e8afc19c-3ba9-4bcc-8029-29351ea55fb9.filesusr.com/ugd/2eff39_c9781bfee10c4a9d9309e5c1ec2d4d37.pdf?index=trueIn PDF document text
    • https://d91457d6-a929-4d89-aced-7f5f0d012ecb.filesusr.com/ugd/54dfea_9b22e54e9fa043f4a541d03b7f9a0a86.pdf?index=trueIn PDF document text
    • https://cd151827-35c8-4a2b-adb9-f52023fb4ffe.filesusr.com/ugd/64e449_5244bbe30fca49529d5b2afb52c2068d.pdf?index=trueIn PDF document text
    • https://d661aab1-88f2-402c-a6a5-4295e19fc2a9.filesusr.com/ugd/48bf55_fb96224d17e84ff1a84afb3c7a4e0b55.pdf?index=trueIn 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_off00006ab3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB3 5440 bytes
SHA-256: 64a059a24b0d44d549271d0aff624cf7688b28127f4f49f5ac16fc2f4f6ef179
font_01_sfnt_off00007d18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D18 10588 bytes
SHA-256: 46ccdd9af8c01c2e353d6252f8901d07ef4bba209ea38bdf807f123daf257411

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