Malicious PDF — malware analysis report

Static analysis result for SHA-256 af13ca6bb21a0976…

MALICIOUS

PDF

53.4 KB Created: 2020-08-07 02:27:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54406f76c8ac657f9f1259f3b397015a SHA-1: 3afdc36d06f379c5c90ba13da32a7877fd89ff00 SHA-256: af13ca6bb21a0976009a7e2c5758ec496f1bc561256f79a15c0a79adb08338b3
120 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it's a malicious redirector and part of a link farm. The primary URL extracted, 'https://ttraff.com/pify?keyword=triple+integrals+in+cylindrical+and+spherical+coordinates+pdf', is flagged as malicious. The document body, though heavily obfuscated, contains this URL, suggesting the document's purpose is to redirect the user to this malicious site.

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.com/pify?keyword=triple+integrals+in+cylindrical+and+spherical+coordinates+pdf
    • http://files.choestoebaptistchurch.org/uploads/1/3/1/6/131607163/mofojajoku.pdf
    • http://mipol.adrienneghaly.com/uploads/1/3/2/6/132681579/wijuwezazote-gamesuv-bexomaxuvefuva-zaxepogovejet.pdf
    • http://vuvofi.mymoonlanding.com/uploads/1/3/2/7/132740900/4147416.pdf
    • http://files.deadgraphicnovel.com/uploads/1/3/0/7/130776073/jifekevojubuv_mugagotobiwo_dolidilikapog_tamibiwixenizig.pdf
    • https://cdn.shopify.com/s/files/1/0434/8447/9641/files/investiture_of_flame.pdf
    • https://cdn.shopify.com/s/files/1/0439/5037/5070/files/alination_philosophie.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vunususojorimit.pdf
    • https://cdn.shopify.com/s/files/1/0428/6827/7404/files/25030192962.pdf
    • https://cdn.shopify.com/s/files/1/0430/4365/1735/files/lafuwisazokuxewe.pdf
    • https://cdn.shopify.com/s/files/1/0430/0744/3103/files/didototoxoveza.pdf
    • https://cdn.shopify.com/s/files/1/0435/0767/9387/files/36520849712.pdf
    • https://cdn.shopify.com/s/files/1/0430/3749/1354/files/49103320156.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/automobile_engineering_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0446/6514/3449/files/12th_sociology_book_in_marathi.pdf
    • https://cdn.shopify.com/s/files/1/0437/9469/4304/files/78397917368.pdf
    • https://cdn.shopify.com/s/files/1/0432/8852/7013/files/1561221435.pdf
    • https://cdn.shopify.com/s/files/1/0431/3668/0098/files/mumikajomiromo.pdf
    • https://cdn.shopify.com/s/files/1/0435/8628/9832/files/tuwujuzetutoxa.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_off0000904f.bin
3aaa13552f03d4edc89142bf876d0cafb2b03ea1301eb24240cd3e14f885f12c
pdf-font-stream PDF embedded font (sfnt) at offset 0x904F 5468 bytes
font_01_sfnt_off0000a2ee.bin
99bcf35e604dbf8b95f46a92936314aaa1a9c4389df27456879d64e83f48d1b2
pdf-font-stream PDF embedded font (sfnt) at offset 0xA2EE 10824 bytes