Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae308cefaed5bf21…

MALICIOUS

PDF

43.2 KB Created: 2020-08-14 08:54:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c9063f0950ec04993691bc0da0ba404f SHA-1: 232ca75a9ad75ace31e203599e990797d803d492 SHA-256: ae308cefaed5bf21c77c8616d6ff564c18af07032dab96bdb166fd2e76def15b
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.com). This indicates a link farm or redirection attack designed to obscure the final malicious destination. The primary malicious URL identified is ttraff.com, which is known to host malicious redirectors. The document body, though heavily obfuscated, contains references to academic topics and the URLs themselves, suggesting a lure to trick users into clicking the malicious links.

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.com/wb?keyword=holonomic%20and%20nonholonomic%20systems%20pdf
    • http://files.laurastonertherapy.com/uploads/1/3/0/7/130740202/7501216.pdf
    • http://files.cutronalawfirm.com/uploads/1/3/0/8/130815026/b577caf38f4fe18.pdf
    • http://files.myeirestory.com/uploads/1/3/1/4/131407796/mupugupafesa-felefijijejo-ferane-volor.pdf
    • https://cdn.shopify.com/s/files/1/0438/4669/7125/files/hebrew_bible_translated_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0431/7098/8196/files/21497991819.pdf
    • https://cdn.shopify.com/s/files/1/0439/2887/9272/files/25304428890.pdf
    • https://cdn.shopify.com/s/files/1/0435/2871/6440/files/mufufeper.pdf
    • https://cdn.shopify.com/s/files/1/0438/3696/5029/files/46273230494.pdf
    • https://cdn.shopify.com/s/files/1/0435/0168/2843/files/bobinigoludizob.pdf
    • https://cdn.shopify.com/s/files/1/0428/6706/4991/files/cathryn_de_bourgh_libros_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0433/9495/7475/files/mrc_tech_ii_loco-_motion_2500_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/jivupoboziben.pdf
    • https://cdn.shopify.com/s/files/1/0428/3564/0476/files/kewuniloti.pdf
    • https://cdn.shopify.com/s/files/1/0434/6436/0100/files/nazetekiwa.pdf
    • https://cdn.shopify.com/s/files/1/0431/0886/0065/files/21352820447.pdf
    • https://cdn.shopify.com/s/files/1/0449/2656/6555/files/auto_tune_evo_free_crack.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b7e.bin
4d91fb2b6b7720c9dfc5e3d7f693c4930bcd25179c26ea0e800b730042c0c557		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B7E 5152 bytes
font_01_sfnt_off00006cd1.bin
451b0e3eb9720a68265507f068950e617b23af9cbead91078e7da77151a4e526		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD1 10892 bytes
font_02_sfnt_off000091d7.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91D7 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.