Malicious PDF — malware analysis report

Static analysis result for SHA-256 01da926d465d388a…

MALICIOUS

PDF

37.3 KB Created: 2020-08-21 21:55:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d4321e4fa04e8e67b3665ee42f4bbd95 SHA-1: 653a8722adc102b1f8b1ec186c8becef78499f74 SHA-256: 01da926d465d388ae76ac3df9955c7440d8af6d93207a1ff30cb7662ce8437f3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a redirector service. The primary malicious URL identified is https://ttraff.cc/pify?keyword=one+piece+binks+sake+piano+sheet+music, which is known to host malicious content. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users to malicious infrastructure.

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=one+piece+binks+sake+piano+sheet+music
    • http://files.advertiseinflight.com/uploads/1/3/1/8/131860060/guleluji.pdf
    • http://files.alifeexplored.com/uploads/1/3/1/1/131164236/5202251.pdf
    • http://winele.debbieelliswatercolours.ca/uploads/1/3/2/6/132681504/4871587.pdf
    • http://jazujameg.tecumsehbakery.com/uploads/1/3/1/6/131636665/cb79ab3ea63.pdf
    • http://dowasime.ccpdiscoveryschool.com/uploads/1/3/1/6/131606490/fedawosorolib.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/9892/2403/files/57660257895.pdf
    • https://cdn.shopify.com/s/files/1/0428/6975/1967/files/anarchism_or_socialism.pdf
    • https://cdn.shopify.com/s/files/1/0430/0183/9775/files/fe_review_manual_2014.pdf
    • https://cdn.shopify.com/s/files/1/0436/9983/0939/files/48297660556.pdf
    • https://cdn.shopify.com/s/files/1/0437/4075/8170/files/54168922599.pdf
    • https://cdn.shopify.com/s/files/1/0433/3446/7752/files/nukutekuxobap.pdf
    • https://cdn.shopify.com/s/files/1/0433/4754/2175/files/64474258062.pdf
    • https://cdn.shopify.com/s/files/1/0438/2290/7554/files/lagusa.pdf
    • https://cdn.shopify.com/s/files/1/0431/3730/2690/files/83672960896.pdf
    • https://cdn.shopify.com/s/files/1/0429/6785/9359/files/migo_mixtape_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/5651/9576/files/16643656702.pdf
    • https://cdn.shopify.com/s/files/1/0431/7960/6177/files/anticipatory_socialization.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000471b.bin
eecf1104d885bb102b2d7634941745f8c4dfe684ca476159e4c164f26a50128a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x471B 3908 bytes
font_01_sfnt_off000054e0.bin
13fb67048b090b1bc6c554df487c523b2c17a2b2c104bf2d6988c7cd69bcea7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54E0 5276 bytes
font_02_sfnt_off000066a5.bin
9ab30ee4c0dec57df32984293b258fee576b35a1451aa26ed05db01d8d0decd4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66A5 9708 bytes

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