Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cc5be714c786a85…

MALICIOUS

PDF

48.9 KB Created: 2020-08-12 10:47:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ad95993aff531532478e52e06e1d1170 SHA-1: 4dc3eecd25cc8eaa62486025f861122e90a545f8 SHA-256: 4cc5be714c786a850f28dd5219cb96b4dbf182c5c73141abaade9c26d9381853
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF document contains a SE_INVOICE_LURE heuristic, indicating it is designed as a fake invoice or payment notification. It embeds numerous external links, with one identified as a PDF_MALICIOUS_REDIRECTOR_LINK pointing to 'https://ttraff.com/pify?keyword=pre+approval+letter+pdf'. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or credential harvesting. No scripts were extracted, limiting the analysis of direct execution capabilities.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/pify?keyword=pre+approval+letter+pdf
    • http://files.janemcdougall.com/uploads/1/3/2/6/132680784/fakisozagoduxinuvusa.pdf
    • http://files.bobbiesboats.com/uploads/1/3/1/4/131411539/siteradiwisevor_vezov.pdf
    • http://mejese.hotelajman.com/uploads/1/3/0/7/130775376/zinarixuribage_rivonajeroni.pdf
    • https://cdn.shopify.com/s/files/1/0434/2572/6625/files/70915941875.pdf
    • https://cdn.shopify.com/s/files/1/0433/8086/7235/files/alcoholic_hallucinosis.pdf
    • https://cdn.shopify.com/s/files/1/0434/2749/6087/files/vmware_workstation_15_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/2430/9659/files/oxford_biology_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3098/files/80422054872.pdf
    • https://cdn.shopify.com/s/files/1/0432/5516/9186/files/59951773542.pdf
    • https://cdn.shopify.com/s/files/1/0438/9765/1352/files/44508025440.pdf
    • https://cdn.shopify.com/s/files/1/0433/7369/1045/files/google_tag_assistant.pdf
    • https://cdn.shopify.com/s/files/1/0435/9516/9950/files/letter_and_number_series.pdf
    • https://cdn.shopify.com/s/files/1/0429/0910/6335/files/solodoxuzekujinubijib.pdf
    • https://cdn.shopify.com/s/files/1/0435/0849/8591/files/43073654830.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_off00007518.bin
648408332a6acf0481430935c123a7ad29fa27e05005bad496137962de6ff1da
pdf-font-stream PDF embedded font (sfnt) at offset 0x7518 4552 bytes
font_01_sfnt_off000084ab.bin
eaf3c99a30b82e09e208b732dc8e4b976a5274908732cf45f8510b174d701e44
pdf-font-stream PDF embedded font (sfnt) at offset 0x84AB 10656 bytes
font_02_sfnt_off0000a911.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0xA911 4324 bytes