Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fed575f40211a04…

MALICIOUS

PDF

59.5 KB Created: 2020-08-23 07:25:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 960e148fee55384e3c3553e394b254de SHA-1: d28f06755e35460bf18ec784396f9a3271c9fece SHA-256: 9fed575f40211a048786234c7faa260970e41988031f32e79e7944f8d4e7187c
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link and a large number of external PDF links, suggesting a link farm or phishing attempt. The document body, though heavily corrupted, contains a URL that matches the malicious redirector found by heuristics. The presence of urgency lures further supports a phishing or scamming intent.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=sinusitis+guidelines+antibiotics
    • http://files.wonderlablearning.com/uploads/1/3/0/7/130776449/9285949.pdf
    • http://files.molecularinformatics.org/uploads/1/3/1/6/131637325/visufati-nidoro-felerosu-gizosev.pdf
    • http://files.oconomowockiwanis.org/uploads/1/3/1/6/131637302/mukejulebiv.pdf
    • http://files.stayinthearena.com/uploads/1/3/2/6/132681482/d202e4ae.pdf
    • http://laxatijaz.happyyummychicken.com/uploads/1/3/1/4/131438234/6022724.pdf
    • https://cdn.shopify.com/s/files/1/0430/2041/9226/files/77351587987.pdf
    • https://cdn.shopify.com/s/files/1/0432/3963/7155/files/40875403463.pdf
    • https://cdn.shopify.com/s/files/1/0428/6713/0534/files/ligonujudomilas.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/duzawubemamomavokam.pdf
    • https://cdn.shopify.com/s/files/1/0440/9432/4888/files/sodasosus.pdf
    • https://cdn.shopify.com/s/files/1/0429/5049/2316/files/vusozazudagezigiduvex.pdf
    • https://cdn.shopify.com/s/files/1/0437/7736/0029/files/69713062179.pdf
    • https://cdn.shopify.com/s/files/1/0430/8847/8359/files/subatebilimikakolabubufex.pdf
    • https://cdn.shopify.com/s/files/1/0432/2518/6466/files/xapelovadimoxem.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_off00009498.bin
c502d23940f06d2dbb740d2fd1540849ba307a59d31075257393ee4cc0e1fb37
pdf-font-stream PDF embedded font (sfnt) at offset 0x9498 5136 bytes
font_01_sfnt_off0000a60a.bin
fc401600e653b82cc0bbb702732535769da177252cf33052ad439e613cba545a
pdf-font-stream PDF embedded font (sfnt) at offset 0xA60A 14120 bytes
font_02_sfnt_off0000d2d9.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0xD2D9 4324 bytes