Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9e2aef8bce5e918…

MALICIOUS

PDF

42.9 KB Created: 2020-08-19 06:50:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 361e534fc03015ebcedaf92fd08d323c SHA-1: da2fa1fbaae9223672cc213e5f69dd2c83d69034 SHA-256: e9e2aef8bce5e9186431e733bbda24c07d3ad5572a78d90207cbfe4da86bff19
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=sorcery+2+apk'. Additionally, it hosts a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic. The ML classifier also strongly flagged this PDF as malicious. The document body contains the malicious URL and references 'Sorcery 2 apk', indicating a lure for potentially unwanted software.

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=sorcery+2+apk
    • http://files.bloomfieldhighclassof69.com/uploads/1/3/1/4/131407178/xofivovu_fatego_desolaboj_musaxulevof.pdf
    • http://files.michelle-turner.net/uploads/1/3/0/8/130815277/c95943.pdf
    • http://files.lawsmosis.com/uploads/1/3/1/4/131453698/rilovovodotino.pdf
    • https://cdn.shopify.com/s/files/1/0433/5838/8374/files/gifibu.pdf
    • https://cdn.shopify.com/s/files/1/0438/5603/6005/files/71448545894.pdf
    • https://cdn.shopify.com/s/files/1/0430/4486/4149/files/86943815707.pdf
    • https://cdn.shopify.com/s/files/1/0429/5049/2316/files/26385811712.pdf
    • https://cdn.shopify.com/s/files/1/0432/1827/2417/files/aggiornare_firmware_autoradio_android.pdf
    • https://cdn.shopify.com/s/files/1/0432/6568/7717/files/75515191839.pdf
    • https://cdn.shopify.com/s/files/1/0431/6567/9776/files/5618278058.pdf
    • https://cdn.shopify.com/s/files/1/0431/3903/9388/files/kuriwufox.pdf
    • https://cdn.shopify.com/s/files/1/0440/0034/6270/files/adobe_acrobat_reader_word_to.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_off00005e63.bin
55bcfac2dfa638156485c7288620e5aee4740c372f493d5941ab2083fad67deb
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E63 5116 bytes
font_01_sfnt_off00006fd7.bin
e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD7 1800 bytes
font_02_sfnt_off00007865.bin
bef9129870f99d802520f34e5c779b387aa972a89531952077809b3726292f70
pdf-font-stream PDF embedded font (sfnt) at offset 0x7865 11360 bytes