Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e8ce7f3c38e289a…

MALICIOUS

PDF

45.8 KB Created: 2020-08-03 08:40:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68eb037e261a45c1f529c7afb50d57de SHA-1: 322cf327068755b66391079beab0d376323b63ee SHA-256: 2e8ce7f3c38e289a1503aacf925e6fe86a881f1a1c7f425c2a838c62a00586db
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.cc', which is further associated with a lure for 'Quickbooks 2015 download'. The document also contains a mass external PDF link farm, with many links hosted on cdn.shopify.com. The presence of these elements suggests a social engineering attack aimed at tricking users into clicking malicious links, likely for software piracy or malware distribution.

Heuristics 3

  • 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.
  • 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=quickbooks+2015+download
    • http://files.liangflower.com/uploads/1/3/1/1/131163976/vokosisizekarake.pdf
    • http://files.mwmlibrary.com/uploads/1/3/1/3/131379037/1795841.pdf
    • http://files.nicoleolsthoorn.com/uploads/1/3/0/7/130738714/filet.pdf
    • http://files.alliancetransfer.com/uploads/1/3/0/7/130775825/wenegerutipulut.pdf
    • https://cdn.shopify.com/s/files/1/0433/2231/0811/files/linivavonag.pdf
    • https://cdn.shopify.com/s/files/1/0432/2784/0669/files/fobakemiwufopunidarexu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7335/5419/files/23628374920.pdf
    • https://cdn.shopify.com/s/files/1/0432/7643/5612/files/novunudijatofizetetaj.pdf
    • https://cdn.shopify.com/s/files/1/0432/3672/0798/files/58736419618.pdf
    • https://cdn.shopify.com/s/files/1/0435/9074/6267/files/28103373506.pdf
    • https://cdn.shopify.com/s/files/1/0439/4326/4411/files/rusogujasipireniduk.pdf
    • https://cdn.shopify.com/s/files/1/0433/8604/4570/files/3992833870.pdf
    • https://cdn.shopify.com/s/files/1/0433/4908/2264/files/59459287765.pdf
    • https://cdn.shopify.com/s/files/1/0432/3989/9304/files/zegusetujiwixanefafa.pdf
    • https://cdn.shopify.com/s/files/1/0437/1460/9305/files/80556445713.pdf
    • https://cdn.shopify.com/s/files/1/0436/4202/8182/files/misisedat.pdf
    • https://cdn.shopify.com/s/files/1/0429/8627/4977/files/deduvofuzinujabituvag.pdf
    • https://cdn.shopify.com/s/files/1/0436/0473/8206/files/kukusilawazefoxeronajeke.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_off000073d4.bin
f6d37f3f00666aa289267edd8cca512e92b555c808968412ff5a47500397b977
pdf-font-stream PDF embedded font (sfnt) at offset 0x73D4 5644 bytes
font_01_sfnt_off00008743.bin
0cf06898321ce975fcc1f6a126f91def5495d89d80079e8616c383fdd4b3fe41
pdf-font-stream PDF embedded font (sfnt) at offset 0x8743 10264 bytes