Malicious PDF — malware analysis report

Static analysis result for SHA-256 94fe14ff0e5e3d77…

MALICIOUS

PDF

40.4 KB Created: 2020-10-05 08:42:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: c1d9c2fce7832a3bd37ce143f39f2fbb SHA-1: ebbb150dccab187cb19c87a40b01c8ba03a24aae SHA-256: 94fe14ff0e5e3d778b18e66a8df5d3a3f9bb96011e6debf783cb007ec3568560
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a redirector service. The primary link identified leads to a known malicious redirector, suggesting an attempt to direct users to harmful content. The document body itself is heavily obfuscated but contains references to the redirector URL and several benign-looking Shopify links, likely used to mask the malicious intent.

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.link/pify?keyword=17+mile+rocks+nursery In PDF document text
    • http://miwiza.iamkingbagi.com/uploads/1/3/0/9/130969130/givimi.pdfIn PDF document text
    • http://kexezav.oakridgewachtelhund.com/uploads/1/3/1/3/131379421/pajozawogazonef.pdfIn PDF document text
    • http://files.chinalux-bsc.com/uploads/1/3/1/4/131438202/lesixubakix.pdfIn 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/1/0496/8113/7821/files/48652987683.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0372/9304/files/60994043335.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3181/2506/files/shelby_farms_memphis_events.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/3222/6203/files/los_7_espiritus_de_dios_isaias.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4642/0132/files/zatoseban.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3802/1544/files/24280077565.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0445/2246/files/sorry_for_the_last_minute_notice_in_spanish.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/1204/9054/files/bopepitesigiwovajobobeki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4760/8730/files/reliability_engineering_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2737/3473/files/mma_training_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0921/5134/files/kirepipinononokatuzemi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/5246/8901/files/bajikom.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_off000061de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61DE 4940 bytes
SHA-256: 8da669dc2fe063bb10987bd6d96cd0071d694f027f03bc5c6e24937bab00304e
font_01_sfnt_off000072ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72AC 10048 bytes
SHA-256: 82ba1949276c46c18cce94c09baf1ccd44e3e082964e16ae3cbe57b92adc026a

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