Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9cb2f827431a0b1…

MALICIOUS

PDF

53.8 KB Created: 2020-08-07 13:02:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0db38695430d66ec8c845ff3b4d4cc52 SHA-1: b21f94f62b6fbdd195e3c911b02fe89ebdb3f694 SHA-256: f9cb2f827431a0b1e6a90dbf041be072add0af15a65f1987c321bec74f61befc
154 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a Quran translation. The link leads to 'ttraff.cc', a known malicious redirector. The PDF also contains a large number of external links, many pointing to Shopify domains, which is characteristic of a link farm used for SEO poisoning to attract victims. The ML classifier strongly flagged this PDF as malicious.

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.cc/pify?keyword=holy+quran+arabic+to+english+translation+pdf
    • http://files.loveleighyoga.com/uploads/1/3/0/7/130775876/nivebidasabov.pdf
    • http://files.greatplainsbeagles.com/uploads/1/3/0/8/130814868/5855319.pdf
    • http://files.emeralddragontales.com/uploads/1/3/2/3/132303229/79353.pdf
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/gitemexim.pdf
    • https://cdn.shopify.com/s/files/1/0433/3531/9711/files/67844839228.pdf
    • https://cdn.shopify.com/s/files/1/0427/8750/4294/files/schengen_visa_application_form_france.pdf
    • https://cdn.shopify.com/s/files/1/0430/7854/9665/files/54234577399.pdf
    • https://cdn.shopify.com/s/files/1/0431/5850/3590/files/furefodepavuvuliko.pdf
    • https://cdn.shopify.com/s/files/1/0431/5627/5362/files/sistemas_energeticos_aerobico_y_anaerobico.pdf
    • https://cdn.shopify.com/s/files/1/0430/7966/3765/files/gopunefa.pdf
    • https://cdn.shopify.com/s/files/1/0432/6545/8336/files/zojefuwirusadofab.pdf
    • https://cdn.shopify.com/s/files/1/0429/7100/5082/files/annamaria_testa_la_pubblicit.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/96280370261.pdf
    • https://cdn.shopify.com/s/files/1/0431/2665/3079/files/apcob_previous_papers.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71062637782.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000690a.bin
ce2785ff93d3255653936cfb032066a3105caf22127b441ae7aed9d906f309ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x690A 5628 bytes
font_01_sfnt_off00007c1a.bin
0f76b4ef3bf6dd0870bc0813a0031205f803d345316233f334bc69759839cc87		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C1A 10420 bytes
font_02_sfnt_off00009fcb.bin
f9945edfb17439b9de703c4c200cd246a6638811283270051e9dd6d3f611facf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FCB 17916 bytes
font_03_sfnt_off0000bb14.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBB14 4324 bytes

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