Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6cb3154c23db3a4…

MALICIOUS

PDF

52.5 KB Created: 2020-07-30 20:00:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 87fc8a5ab7ccb30325ee9a9a873fc318 SHA-1: 8436035a19d6e23809838a4e11f035f6d38eb537 SHA-256: d6cb3154c23db3a4d224033b6a6713f8458b3c16cde11765236abe5ec657399c
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. It also contains a PDF link farm heuristic, with numerous links hosted on 'cdn.shopify.com'. The document body, though heavily obfuscated, appears to be a lure related to 'bicarbonato de sodio propiedades fisicas y quimicas pdf', likely intended to trick users into clicking the malicious link.

Heuristics 3

  • 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.
  • 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=bicarbonato+de+sodio+propiedades+fisicas+y+quimicas+pdf
    • http://files.fertilityafter40.com/uploads/1/3/1/4/131406434/5653844.pdf
    • http://files.sacredmountainjourneys.com/uploads/1/3/1/3/131380606/1126287.pdf
    • http://files.speiserlab.com/uploads/1/3/1/8/131858540/4aada7a4704.pdf
    • http://files.houseofindians.info/uploads/1/3/1/3/131384468/4737928.pdf
    • http://files.rafikibiblestudy.org/uploads/1/3/0/7/130739210/5679026.pdf
    • http://files.speiserlab.com/uploads/1/3/1/8/131858
    • https://cdn.shopify.com/s/files/1/0438/9512/8216/files/lemes.pdf
    • https://cdn.shopify.com/s/files/1/0429/8814/2743/files/15149725642.pdf
    • https://cdn.shopify.com/s/files/1/0429/8797/8913/files/nasasa.pdf
    • https://cdn.shopify.com/s/files/1/0432/8056/4392/files/22936598235.pdf
    • https://cdn.shopify.com/s/files/1/0430/6662/2105/files/10586674440.pdf
    • https://cdn.shopify.com/s/files/1/0429/1035/1513/files/wikorepoboxo.pdf
    • https://cdn.shopify.com/s/files/1/0438/7612/2792/files/bufom.pdf
    • https://cdn.shopify.com/s/files/1/0430/4853/4167/files/pipuw.pdf
    • https://cdn.shopify.com/s/files/1/0431/4795/2294/files/25843335369.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/11411440246.pdf
    • https://cdn.shopify.com/s/files/1/0430/0265/8979/files/wujeno.pdf
    • https://cdn.shopify.com/s/files/1/0435/8674/8579/files/pukitosezidorogopure.pdf
    • https://cdn.shopify.com/s/files/1/0431/3687/6695/files/95623705642.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_off00007fe6.bin
36fa62ce9ce971fd3c9bf9cfb5b6658fcc9aec38669b517981643a62dcd34c11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FE6 5568 bytes
font_01_sfnt_off000092b6.bin
ed7dc132f864be8669606b4a265659c11fef491d352790d5abac3708f552683d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92B6 15832 bytes

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