Malicious PDF — malware analysis report

Static analysis result for SHA-256 01604414c7b82fae…

MALICIOUS

PDF

53.0 KB Created: 2020-08-22 00:41:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 017371d2ce2b9177d1e517bfda4e78c5 SHA-1: e5d68be63dce20e84b7dc32fea0735b80257edcb SHA-256: 01604414c7b82faeea75d1d070a6d68afa981d4390d60c0e4a55cfa76f08a17b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains embedded links that redirect to malicious infrastructure, specifically a URL designed to appear as an ISO 14001 audit report template. The ML classifier strongly indicates maliciousness, and the presence of a redirector link confirms the intent to lead the user to a potentially harmful site. No scripts were extracted, but the PDF structure itself is used for the malicious redirection.

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=iso+14001+internal+audit+report+template
    • http://gafikakiz.artisan-frames.com/uploads/1/3/2/8/132814930/6816956.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sakumuxapiwitisozu.pdf
    • https://cdn.shopify.com/s/files/1/0430/7704/2337/files/canvas_text_font_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/0310/0836/files/kogirazenejow.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/395667921.pdf
    • https://cdn.shopify.com/s/files/1/0427/7328/2983/files/siwasinumikozivinelijiwi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99839510681.pdf
    • https://cdn.shopify.com/s/files/1/0438/7300/9819/files/wurogezojuvasixuzi.pdf
    • https://cdn.shopify.com/s/files/1/0435/0243/6512/files/20242105650.pdf
    • https://cdn.shopify.com/s/files/1/0429/9587/5993/files/xuwarozowaxemomutizitewu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8356/3162/files/64234264413.pdf
    • https://cdn.shopify.com/s/files/1/0431/4536/3610/files/45089163063.pdf
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/99505333384.pdf
    • https://cdn.shopify.com/s/files/1/0447/2560/0410/files/el_almohadon_de_plumas_ciudad_seva.pdf
    • https://cdn.shopify.com/s/files/1/0431/5866/7430/files/nixewuto.pdf
    • https://cdn.shopify.com/s/files/1/0435/2521/0263/files/biochemical_analysis_of_blood.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008e51.bin
cc447f1ef064acf8f314ce8763660782de572517e5c0df8f358dbecf073c96dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E51 5324 bytes
font_01_sfnt_off0000a052.bin
7d3fc334b3761e10fd56f71efb31f713d70a25522a75e722abe951c1381c1760		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA052 11340 bytes

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