Malicious PDF — malware analysis report

Static analysis result for SHA-256 6269b8455f849068…

MALICIOUS

PDF

65.9 KB Created: 2020-09-01 04:19:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75480cb5e23f1109b388a8b71ebfe1fb SHA-1: 6568cf8be92ac97fb5d32c3a177909ea0b31c16b SHA-256: 6269b8455f849068551ca8d57cc1a70445a4d005e6030b37f4d3b18fda6881b0
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, ttraff.ru, which is disguised as a bookmark template. This URL is likely used to direct users to a malicious site or download further malware. The PDF also contains a large number of external links, suggesting it is part of a link farm designed for SEO manipulation, potentially to increase the visibility of malicious content.

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/wix?keyword=diary+of+a+wimpy+kid+bookmark+template
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/e3834b_a136fc9f1358427da3a56d198c59398f.pdf
    • https://static.usrfiles.com/ugd/599f1c_ef8a6d92f86c4344acccff1d36eea2a7.pdf
    • https://static.usrfiles.com/ugd/50de67_2a2af061dfb64ec59093928df99d09fa.pdf
    • https://static.usrfiles.com/ugd/2f7815_1988d7bb0593439987f4d7268359d7bf.pdf
    • https://cdn.shopify.com/s/files/1/0429/6605/7116/files/woluwubobowajisujejos.pdf
    • https://cdn.shopify.com/s/files/1/0429/5573/5203/files/fuzanaduxazalomo.pdf
    • https://cdn.shopify.com/s/files/1/0432/1778/0896/files/fazuravekabizejorizeme.pdf
    • https://cdn.shopify.com/s/files/1/0450/8083/8309/files/graco_390_airless_paint_sprayer_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/9812/9059/files/rewibejij.pdf
    • https://cdn.shopify.com/s/files/1/0434/1350/4156/files/wesinamakebotokugib.pdf
    • https://cdn.shopify.com/s/files/1/0430/9683/4212/files/bull_sf_pc.pdf
    • https://cdn.shopify.com/s/files/1/0431/5791/3749/files/awdhesh_premi_ke_gana_video_mein.pdf
    • https://cdn.shopify.com/s/files/1/0461/7135/7336/files/61588981678.pdf
    • https://cdn.shopify.com/s/files/1/0433/5442/3464/files/java_8_certification_questions_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0430/5872/5015/files/6242229399.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000981b.bin
347ad4ddff932a4e9b8842b599c35e37aa5436846935eea76323bf0d464d8569		 pdf-font-stream PDF embedded font (sfnt) at offset 0x981B 5404 bytes
font_01_sfnt_off0000aa82.bin
297f52f4236f09ba58e85c0251406db64a4d3221d73012e717b108c12409d6fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAA82 2576 bytes
font_02_sfnt_off0000b441.bin
65ea3289646a54f426c154711aed8cac5c7b69bd3da8fe99cb6ab042772e3349		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB441 14548 bytes
font_03_sfnt_off0000e212.bin
68360d215686b7ffd363eeb0253592cf4566abf286d77cfdfbfe23f63f7602e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE212 16780 bytes

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