Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7c986f6e5eaff61…

MALICIOUS

PDF

64.2 KB Created: 2020-08-14 02:45:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f9ab105016ee61624384379d52f27070 SHA-1: 30082511c9242d97cac59751bae7325af799ec01 SHA-256: d7c986f6e5eaff6187787a8c39172c5a67aa2b757886f07d84995751523372c6
152 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical redirector link pointing to a known malicious domain. The document body, though heavily obfuscated, contains the URL that is also present in the heuristics. This suggests the PDF is designed to deliver users to malicious content via the redirector.

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=ionic+and+covalent+bonding+practice+with+answers
    • http://rozavagug.kcboutique.shop/uploads/1/3/1/3/131380126/7690299.pdf
    • http://binetulis.redteddypup.com/uploads/1/3/0/7/130740044/wutonadese.pdf
    • http://files.languageshield.com/uploads/1/3/1/4/131408203/famojukamevekefalowe.pdf
    • http://purag.wagner-heavymetal.com/uploads/1/3/1/0/131070761/liwatopuwabazupuf.pdf
    • https://cdn.shopify.com/s/files/1/0434/4646/8769/files/lodos_activados_aguas_residuales.pdf
    • https://cdn.shopify.com/s/files/1/0431/1243/1776/files/baxebetin.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/movatevowaninufore.pdf
    • https://cdn.shopify.com/s/files/1/0432/0264/2075/files/53125722923.pdf
    • https://cdn.shopify.com/s/files/1/0436/7928/5401/files/dopom.pdf
    • https://cdn.shopify.com/s/files/1/0428/7240/6179/files/91691032862.pdf
    • https://cdn.shopify.com/s/files/1/0441/2702/7352/files/data_mining_tutorial_point.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/texigusowemojegovivek.pdf
    • https://cdn.shopify.com/s/files/1/0432/0319/9138/files/southern_playalistic_cadillac_music.pdf
    • https://cdn.shopify.com/s/files/1/0432/7099/6128/files/30896528683.pdf
    • https://cdn.shopify.com/s/files/1/0430/3598/4029/files/kuvupud.pdf
    • https://cdn.shopify.com/s/files/1/0432/6660/5219/files/fjalor_italisht_shqip.pdf
    • https://cdn.shopify.com/s/files/1/0430/5040/1943/files/altimetry_questions.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/
    • https://cdn.shopify.com/s/files/1/0433/5131/0488

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009fc7.bin
cb202a8d873e3af50557045ac1c8af24417045b93bf4ac17ca7f497f98e8a878		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FC7 5564 bytes
font_01_sfnt_off0000b2b6.bin
3f9b47abf6a2b1f59487eba10a8618270e6a6fa883ff4f38cef51d6c42caaa6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB2B6 13540 bytes
font_02_sfnt_off0000de17.bin
cb2ab70465108ce6c84721151322b6eb18361c8c08d23d343aeecc820982f7ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE17 16080 bytes

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