Malicious PDF — malware analysis report

Static analysis result for SHA-256 232739715877edd9…

MALICIOUS

PDF

45.2 KB Created: 2020-07-30 07:46:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2aeba89ca85cea2ff376360ecbfa1a83 SHA-1: 65457d6525168bd83502a16193e12d967e9fc0f9 SHA-256: 232739715877edd917c5099220b46b5dd02a97e7d9096669392357c9f972008d
154 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically 'https://ttraff.ru/pify?keyword=isaac+albeniz+granada+pdf'. The document body, though heavily obfuscated, suggests a lure related to 'Isaac albeniz granada pdf', likely to trick users into clicking the malicious link. The presence of numerous external PDF links also indicates a link farm strategy.

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.ru/pify?keyword=isaac+albeniz+granada+pdf
    • http://files.withthesehandsmj.com/uploads/1/3/1/0/131070820/zofadikuvonop.pdf
    • http://files.vetiveracupuncture.com/uploads/1/3/2/3/132303270/bb00cb6ce5d.pdf
    • http://files.stagecoachtrailers.com/uploads/1/3/1/8/131856173/nojopozakosozadesem.pdf
    • http://files.jellybeanschilddevelopmentcenter.com/uploads/1/3/1/3/131383604/fifefaparo_lorasewanizagal.pdf
    • http://files.stagecoachtrailers.com/uploads/1/3/
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37237973095.pdf
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/57420054028.pdf
    • https://cdn.shopify.com/s/files/1/0427/9291/1007/files/55332718483.pdf
    • https://cdn.shopify.com/s/files/1/0428/6968/6431/files/zujogexijikikidukotub.pdf
    • https://cdn.shopify.com/s/files/1/0429/3450/1535/files/fedusevuxur.pdf
    • https://cdn.shopify.com/s/files/1/0429/0763/1783/files/pemiboziwizezegesunoxavik.pdf
    • https://cdn.shopify.com/s/files/1/0433/3309/1496/files/sijatojavefugegafaferuwub.pdf
    • https://cdn.shopify.com/s/files/1/0433/0671/3253/files/59163204137.pdf
    • https://cdn.shopify.com/s/files/1/0431/1502/0448/files/92095524154.pdf
    • https://cdn.shopify.com/s/files/1/0432/8990/3259/files/77307249750.pdf
    • https://cdn.shopify.com/s/files/1/0428/2961/1171/files/57907421959.pdf
    • https://cdn.shopify.com/s/files/1/0428/1165/4307/files/jevojejarogorunawuki.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/21244882445.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kupenase.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_off00007317.bin
e968c5a5d138aee571ef5175d4b329913bd63ef678adaf00fb6020e3a30cff9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7317 5048 bytes
font_01_sfnt_off0000843a.bin
5600938ebbdfd2eb6b0453cd7bd474e56dcbfbc5277fa152f538abc915357ba3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x843A 10184 bytes

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