Malicious PDF — malware analysis report

Static analysis result for SHA-256 a005b575dfba70f4…

MALICIOUS

PDF

33.6 KB Created: 2020-08-04 21:23:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 223ef40298bc5ca09c85b440c714d4c6 SHA-1: 327012ae3dfca281a60575bb9e436a1d67584ec7 SHA-256: a005b575dfba70f47e2037e0fcde1242f12d2460ed618190d475f1a759015c6a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body text, though partially corrupted, includes the phrase 'Alpha male books pdf free download' and a URL that aligns with the malicious redirector heuristic. This suggests the PDF is designed as a lure to drive traffic to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted from this sample.

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.com/pify?keyword=alpha+male+books+pdf+free+download
    • http://files.wildrootsskinbody.com/uploads/1/3/0/9/130969218/lejepasezi-dapezojavev-gijuxapa-ruberugino.pdf
    • http://files.kegoodrich.com/uploads/1/3/0/7/130775747/bonofumanewulogezapu.pdf
    • http://files.monasteriumlab.eu/uploads/1/3/1/1/131164479/dekiwo.pdf
    • https://cdn.shopify.com/s/files/1/0428/4963/2412/files/70051892591.pdf
    • https://cdn.shopify.com/s/files/1/0436/0221/5069/files/advanced_accounting_fischer_11th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0435/8812/4830/files/gizukuj.pdf
    • https://cdn.shopify.com/s/files/1/0435/5670/0319/files/48226649218.pdf
    • https://cdn.shopify.com/s/files/1/0432/7853/2758/files/adenitis_mesenterica_aguda.pdf
    • https://cdn.shopify.com/s/files/1/0431/9795/6256/files/lojagonisoromakebo.pdf
    • https://cdn.shopify.com/s/files/1/0434/6534/3133/files/julikiferinekokurijut.pdf
    • https://cdn.shopify.com/s/files/1/0433/2208/1448/files/26914572804.pdf
    • https://cdn.shopify.com/s/files/1/0430/4814/0949/files/92687510888.pdf
    • https://cdn.shopify.com/s/files/1/0432/3734/3387/files/the_getaway_black_monday.pdf
    • https://cdn.shopify.com/s/files/1/0428/9937/4236/files/34696965777.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nexunalazuzifoginiwaboliz.pdf
    • https://cdn.shopify.com/s/files/1/0435/6197/5971/files/aiou_admission_form_spring_2020.pdf
    • https://cdn.shopify.com/s/files/1/0435/5204/7255/files/the_practice_season_8.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000045ec.bin
66bc28893f054e53a9e8da227dc9ad431f8f4581aef937117eac81b51be4b14b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45EC 5568 bytes
font_01_sfnt_off000058b2.bin
46ac61c35da3b7f9beeb2ccdea9474d3d18800ad528cdabff64b3fa59a17c1c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58B2 9712 bytes

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