Malicious PDF — malware analysis report

Static analysis result for SHA-256 2555ffb63bc7533e…

MALICIOUS

PDF

43.5 KB Created: 2020-07-25 05:27:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 18daeebb882642f097c769718c2f59b0 SHA-1: a0ec41218f83de1d4e4e1d11d23e98667b0682fc SHA-256: 2555ffb63bc7533e3254c1dabc9f8a9962469260016c8f1f3cf64febdc986525
140 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link and a link farm, indicating a phishing or scam attempt. Additionally, a callback lure heuristic suggests the document prompts the user to call a phone number, consistent with tech-support scams. The embedded URL points to a redirector, likely leading to further malicious content or phishing pages.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=wapking+song++dj
    • http://files.schreinerarbeitenbuechler.com/uploads/1/3/1/3/131380052/1109442.pdf
    • http://files.photosbyjoierey.com/uploads/1/3/1/4/131453276/2764440.pdf
    • http://files.hiddenvioletsconsulting.com/uploads/1/3/1/8/131856173/juwunimo-sutudowamujunuk-sevewafopol-pebekol.pdf
    • http://files.hiddenvioletsconsulting.com/uploads/1/3/1/8/131856173/juwunimo-sutudowamujunuk-sevewafopol-pebekol
    • https://cdn.shopify.com/s/files/1/0428/8066/3705/files/sifivenawiwabasezoso.pdf
    • https://cdn.shopify.com/s/files/1/0428/6296/8991/files/56312199128.pdf
    • https://cdn.shopify.com/s/files/1/0428/9229/6358/files/mudabe.pdf
    • https://cdn.shopify.com/s/files/1/0434/3142/8248/files/42497180282.pdf
    • https://cdn.shopify.com/s/files/1/0441/2522/5112/files/79540651103.pdf
    • https://cdn.shopify.com/s/files/1/0435/0767/9397/files/2333705494.pdf
    • https://cdn.shopify.com/s/files/1/0428/9894/8255/files/zogezewadapunexeverotif.pdf
    • https://cdn.shopify.com/s/files/1/0429/7926/2623/files/96976153000.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zaduvezumutup.pdf
    • https://cdn.shopify.com/s/files/1/0430/3929/3589/files/94804055133.pdf
    • https://cdn.shopify.com/s/files/1/0428/3557/4943/files/vunafejin.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31906594002.pdf
    • https://cdn.shopify.com/s/files/1/0431/4978/7285/files/fagovazexononarojoser.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_off000065aa.bin
537f5806b2176f756bcadfcbaa45ad260152d62d5d16821a0c2b1ed5b41d6a57
pdf-font-stream PDF embedded font (sfnt) at offset 0x65AA 4740 bytes
font_01_sfnt_off000075d5.bin
ecde5de92989d5925e034b5ea502e18cb58bf69a8c35146ff7646897ef056db8
pdf-font-stream PDF embedded font (sfnt) at offset 0x75D5 13732 bytes