Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d091e36054e86ff…

MALICIOUS

PDF

94.7 KB Created: 2020-10-02 01:00:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 4ca602882082e8a7f468cde8635d5c2c SHA-1: aab5b3980df6215d54f6797874ef5365c0e5d738 SHA-256: 1d091e36054e86ffea455b3e6db9e71ff6d40f7ffc11c4708c930a95c5e0a0c8
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, which is likely intended to lead the user to a malicious site. The document body, though heavily obfuscated, contains the URL and appears to be a lure related to 'Abu Dhabi map pdf'. The presence of numerous external PDF links further suggests a link farm or SEO poisoning attempt to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://gettraff.ru/strik?keyword=abu+dhabi+map+pdf In PDF document text
    • http://files.gordongreggphotography.com/uploads/1/3/0/8/130814121/e83eb247bd970b.pdfIn PDF document text
    • http://files.artworkshopsatjervisbay.com/uploads/1/3/0/7/130740158/8760841.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/9803/4342/files/molomufibumisibov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0469/4697/5905/files/cleanmymac_3_crack_keygen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2108/0475/files/jack_ma_wife_name.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0141/1744/files/18710654090.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5599/9897/files/zomogiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5725/8395/files/flight_simulator_apk_mod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2058/5624/files/71997100617.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7013/9797/files/just_wanted_to_say_i_love_you_letters.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001149e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1149E 5104 bytes
SHA-256: d9e575e2e5fab306980e70b9730b2c79715596d8a3a73e33f8e0369bef2195e6
font_01_sfnt_off000125d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125D6 12472 bytes
SHA-256: 093a843b52c2e60bca96bf1fa817a71f57982195e7de2c6b75c7ed2cfd9cc0ae
font_02_sfnt_off00015024.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15024 18716 bytes
SHA-256: 0366db7b61957ae39be664c9cdfdb20532241829937d428b59863df8b3bfda50

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