Malicious PDF — malware analysis report

Static analysis result for SHA-256 87794f24e9f4339f…

MALICIOUS

PDF

43.9 KB Created: 2020-08-03 22:09:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a8408f03d43d05cec449fa1fef64fb37 SHA-1: a6987cbca5ca35e0aec48593b7bc1ec07cf79689 SHA-256: 87794f24e9f4339f0fae1a0d3df5df2f5b413880afb1d049e9d056a35ab3d9d0
130 Risk Score

Malware Insights

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

The PDF document contains a lure related to a 'PDF to DWG converter 2020 online' and includes a link that redirects to malicious infrastructure. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the link leads to known malicious redirectors. Additionally, the PDF_SEO_LINK_FARM heuristic indicates the document is part of a larger link farm, likely for SEO manipulation or distributing malicious content. The presence of urgency language further supports a phishing or scam attempt.

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.com/pify?keyword=pdf+to+dwg+converter+2020+online
    • http://files.coloryourworldbymadara.com/uploads/1/3/1/4/131452861/5bb91.pdf
    • http://files.martinsburgflipside.com/uploads/1/3/1/8/131871433/9608765.pdf
    • http://files.stockportmalayali.org/uploads/1/3/1/4/131483337/lopumanubugizis.pdf
    • http://files.electramicllc.com/uploads/1/3/0/7/130740242/b07e34.pdf
    • https://cdn.shopify.com/s/files/1/0431/8117/9029/files/dogukefiwafofuwisajup.pdf
    • https://cdn.shopify.com/s/files/1/0434/3991/5164/files/fikizifomar.pdf
    • https://cdn.shopify.com/s/files/1/0434/0416/5285/files/pafifepero.pdf
    • https://cdn.shopify.com/s/files/1/0435/2344/0804/files/bodabudadog.pdf
    • https://cdn.shopify.com/s/files/1/0432/4166/8775/files/korut.pdf
    • https://cdn.shopify.com/s/files/1/0431/0325/6737/files/analytical_methods_in_chemistry_book.pdf
    • https://cdn.shopify.com/s/files/1/0429/9633/4753/files/26578732638.pdf
    • https://cdn.shopify.com/s/files/1/0431/2226/2178/files/masirekobana.pdf
    • https://cdn.shopify.com/s/files/1/0433/4895/1194/files/zerekalowigufo.pdf
    • https://cdn.shopify.com/s/files/1/0433/7234/7550/files/boresojusunugirajej.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_off0000606d.bin
d51d5e7784e6e660702e87e048c362540f3e40f249ee279e98bf5ef0a4218de1
pdf-font-stream PDF embedded font (sfnt) at offset 0x606D 5016 bytes
font_01_sfnt_off000071a1.bin
25039baf3dc016bb1215c4924bf8a8303a6ce282f03fa85aa2d9c657cc511e49
pdf-font-stream PDF embedded font (sfnt) at offset 0x71A1 10284 bytes
font_02_sfnt_off000094cd.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x94CD 4324 bytes