Malicious PDF — malware analysis report

Static analysis result for SHA-256 af3978c8ac15d953…

MALICIOUS

PDF

57.5 KB Created: 2020-08-15 02:43:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4bb8bf18c970c11f277cb1f6bf283d16 SHA-1: 5b3da75be3644be8bf72740b2a66a7d028535eea SHA-256: af3978c8ac15d9536afe5a0e630b7247f9fbad9c56a19ceac23605b589530bcc
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to a redirector service. The primary heuristic indicates that these links are intended to lead users to malicious infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=pennant+banner+template+svg', which is flagged as a malicious redirector. This suggests a phishing or scam attempt, likely to deliver further malware or lead users to fraudulent content.

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=pennant+banner+template+svg
    • http://files.whhsvisualarts.org/uploads/1/3/0/7/130775027/6442162.pdf
    • https://cdn.shopify.com/s/files/1/0435/6558/0437/files/inverter_using_cd4047.pdf
    • https://cdn.shopify.com/s/files/1/0429/7415/0809/files/46427258621.pdf
    • https://cdn.shopify.com/s/files/1/0430/5181/0969/files/90699195143.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pizegavegip.pdf
    • https://cdn.shopify.com/s/files/1/0432/6676/9051/files/93871379985.pdf
    • https://cdn.shopify.com/s/files/1/0433/2313/0009/files/polaroid_stories_play.pdf
    • https://cdn.shopify.com/s/files/1/0437/9040/1687/files/97556122765.pdf
    • https://cdn.shopify.com/s/files/1/0430/6350/9143/files/alphabet_sounds_flashcards.pdf
    • https://cdn.shopify.com/s/files/1/0437/8574/8642/files/academic_writing_from_paragraph_to_essay_download.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 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000592f.bin
6a9317aed4d3ccb623922dc49c3fedd627aeda6f049501cc7b7b6d4ce027f31c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x592F 4076 bytes
font_01_sfnt_off000067ab.bin
fe3221e0db89939d5d1b10270b83c3c750f911165328fd721221051e5ff3272e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67AB 5340 bytes
font_02_sfnt_off000079b8.bin
cd0f4459de52dfd6ad42251c6369362a9af6018fafeec65dcaeb8cee15515f08		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79B8 5812 bytes
font_03_sfnt_off0000884f.bin
8843e7060156a0106b7f12564791b664436ee2c6d0a7f39beaede8c5e117111a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x884F 12472 bytes
font_04_sfnt_off0000b063.bin
d78d7cc1a68daa951b4fbccbcfb906d5a08ad384f187125596154666a45abe72		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB063 16060 bytes
font_05_sfnt_off0000c534.bin
783c78b4189d51ea91fc95a8d1944382a7f8450c4f03919900a768eaa27a0d20		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC534 5400 bytes

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