Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9b309ea13dcabf1…

MALICIOUS

PDF

59.4 KB Created: 2020-08-07 01:57:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2e1f2bde246edf2bf951f937a4145689 SHA-1: 273742133d17e0c9081a99a8f69d9acc5aaa85d4 SHA-256: b9b309ea13dcabf1ae6ade24ae9176d71b8d7beb927211509188c56b965d6c80
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is designed to lead users to further malicious content. The document body, though heavily obfuscated, contains the URL and appears to be a lure related to the Hanging Gardens of Babylon. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO manipulation tactic to distribute the 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.cc/pify?keyword=jardines+colgantes+de+babilonia+historia+pdf
    • http://xevupuke.jasonmoliterno.com/uploads/1/3/0/7/130775971/2819225.pdf
    • http://files.lorifurbush.com/uploads/1/3/0/8/130814254/lopiwuvivodixu-xidito-teteweg-vataduvol.pdf
    • http://files.thegoodfeelinglife.com/uploads/1/3/0/7/130738700/nuded.pdf
    • http://files.retrohacks.net/uploads/1/3/1/4/131437948/e8c3f298d3eff.pdf
    • http://gigux.rto2go.com.au/uploads/1/3/1/1/131164250/8b9ca2.pdf
    • https://cdn.shopify.com/s/files/1/0435/8481/5259/files/baxubibesesa.pdf
    • https://cdn.shopify.com/s/files/1/0437/0425/4615/files/xotirolozimobixotaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wunize.pdf
    • https://cdn.shopify.com/s/files/1/0428/4763/3575/files/workplace_bullying_in_the_philippines.pdf
    • https://cdn.shopify.com/s/files/1/0431/6839/9524/files/sawarilix.pdf
    • https://cdn.shopify.com/s/files/1/0430/9303/3117/files/doleposuvakepowusajame.pdf
    • https://cdn.shopify.com/s/files/1/0433/9616/9886/files/english_dictionary_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/5725/8401/files/putitupidibibogan.pdf
    • https://cdn.shopify.com/s/files/1/0441/0834/9592/files/41894377693.pdf
    • https://cdn.shopify.com/s/files/1/0436/1207/8243/files/16068612688.pdf
    • https://cdn.shopify.com/s/files/1/0432/1270/1854/files/wonawa.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a64e.bin
ea2f61c33bcac1fb19b56c32586003829eb216f9a525cf2a878b2e1078f3be3e
pdf-font-stream PDF embedded font (sfnt) at offset 0xA64E 5544 bytes
font_01_sfnt_off0000b91c.bin
28eb57fe2bc69c1a466383e8b5b28cac4329124f8640d6ea1773bd0deb8fc447
pdf-font-stream PDF embedded font (sfnt) at offset 0xB91C 11476 bytes