Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4909e84e372d674…

MALICIOUS

PDF

46.8 KB Created: 2020-08-06 02:57:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 93207ac03ffdfa2cbb581f5aad1fde2b SHA-1: 0c37787d2721fab71ecce48ed35d755640dbb667 SHA-256: d4909e84e372d67404b6e1f8c4da9a0ed7236fe349883bc163ca412b053b4d3b
160 Risk Score

Malware Insights

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

The PDF contains a lure related to "streamlined sales tax pdf" and embeds numerous links, including a known malicious redirector at ttraff.cc. The heuristic firings indicate this is a classic advance-fee fraud document shape, likely intended to trick the user into clicking malicious links by promising access to tax documents or similar information. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=streamlined+sales+tax+pdf
    • http://files.mrobinsonartworks.com/uploads/1/3/1/4/131454523/dowasow_pugewudovirame_rufurosol_wiwavife.pdf
    • http://files.churchbeyondbelief.com/uploads/1/3/2/8/132814119/nunamusuw.pdf
    • http://files.imperialbathtreats.com/uploads/1/3/1/4/131453022/6575651.pdf
    • http://jifara.mosaicsbysandisykora.com/uploads/1/3/1/8/131856257/2002616.pdf
    • https://cdn.shopify.com/s/files/1/0429/7719/8229/files/xajasesirozotoro.pdf
    • https://cdn.shopify.com/s/files/1/0431/6862/8890/files/kiwiz.pdf
    • https://cdn.shopify.com/s/files/1/0427/5752/1574/files/29205065660.pdf
    • https://cdn.shopify.com/s/files/1/0430/8510/3255/files/66128302277.pdf
    • https://cdn.shopify.com/s/files/1/0437/3302/4929/files/songs_to_twerk_to.pdf
    • https://cdn.shopify.com/s/files/1/0433/4695/2351/files/47012153918.pdf
    • https://cdn.shopify.com/s/files/1/0431/7865/5903/files/19988680951.pdf
    • https://cdn.shopify.com/s/files/1/0432/7663/2214/files/1197741773.pdf
    • https://cdn.shopify.com/s/files/1/0433/3407/4523/files/54013690172.pdf
    • https://cdn.shopify.com/s/files/1/0439/4595/1400/files/dimeluromodaruvifol.pdf
    • https://cdn.shopify.com/s/files/1/0437/6608/7838/files/28869605415.pdf
    • https://cdn.shopify.com/s/files/1/0430/8385/8080/files/64626384601.pdf
    • https://cdn.shopify.com/s/files/1/0431/3029/0327/files/64433939043.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_off00006959.bin
2e21c56a85553deff8cca7f55a91045d1beca28f33c75eecbc5d9722ecc658a2
pdf-font-stream PDF embedded font (sfnt) at offset 0x6959 5036 bytes
font_01_sfnt_off00007a4e.bin
cda4f3ffc4bab3c7c9248fa41cd8f3c2bc0420612e0860e8ce863f5dd4c8867a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A4E 11016 bytes
font_02_sfnt_off00009fe1.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x9FE1 4324 bytes