Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdb5e0f618dd656e…

MALICIOUS

PDF

43.3 KB Created: 2020-08-16 22:17:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8841b8080def444bdfb6cc56d0b69ca2 SHA-1: f0c1d6c9f412aa1921e36796e2125cd1c04af5d8 SHA-256: cdb5e0f618dd656e181a18e7d077a6984a92b08badc1ef280e3291c49ebdbee9
160 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=big+love+guitar+tab+pdf'. Additionally, it exhibits a PDF link farm heuristic, with numerous links to Shopify-hosted PDFs, suggesting an attempt to manipulate search engine results or distribute content. The document also contains a heuristic indicating it's a lure for a password-protected archive, implying a multi-stage attack. No scripts were extracted from this sample.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.ru/pify?keyword=big+love+guitar+tab+pdf
    • http://fuzone.thehighground.shop/uploads/1/3/1/0/131070420/toxon_supisorub_koxuvi_jubawapavamo.pdf
    • http://files.savefarthingworthgreen.org/uploads/1/3/0/8/130814516/6145178.pdf
    • http://pilepakax.capecodhomelearners.com/uploads/1/3/2/3/132303382/paxevi_zuletugene_bipopozike.pdf
    • http://wobokob.leadershiplabinternational.org/uploads/1/3/0/8/130873851/nezefowidadojij_raximeneto.pdf
    • https://cdn.shopify.com/s/files/1/0432/6090/3582/files/fadifasixarifawufewuj.pdf
    • https://cdn.shopify.com/s/files/1/0436/2423/5170/files/fiwizetipojaserozilo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1567/5815/files/wusubavob.pdf
    • https://cdn.shopify.com/s/files/1/0436/5425/0654/files/the_seven_chakras_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/1575/7214/files/30897950670.pdf
    • https://cdn.shopify.com/s/files/1/0447/8284/6109/files/biochemistry_test_normal_values.pdf
    • https://cdn.shopify.com/s/files/1/0431/4277/4938/files/norojudixidevudikuka.pdf
    • https://cdn.shopify.com/s/files/1/0439/9936/3222/files/capitals_of_the_world_quiz.pdf
    • https://cdn.shopify.com/s/files/1/0431/8691/3431/files/dazotisenopejaboninavena.pdf
    • https://cdn.shopify.com/s/files/1/0433/5425/9610/files/equinox_sleep_build.pdf
    • https://cdn.shopify.com/s/files/1/0430/9037/8909/files/80417932616.pdf
    • https://cdn.shopify.com/s/files/1/0432/5041/7827/files/75135564427.pdf
    • https://cdn.shopify.com/s/files/1/0434/0695/0557/files/spider_man_into_the_spider_verse_comic_book.pdf
    • https://cdn.shopify.com/s/files/1/0435/3196/0474/files/sodema.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_off000064a0.bin
8a60846544ff6560414528698e4f02eae80471ca532e1645ea6188f6982b7cfe
pdf-font-stream PDF embedded font (sfnt) at offset 0x64A0 5280 bytes
font_01_sfnt_off000076a9.bin
d954cc628430e02514581430c6477be2125e94056a76fa8373e6e924ac891bd5
pdf-font-stream PDF embedded font (sfnt) at offset 0x76A9 12888 bytes