Malicious PDF — malware analysis report

Static analysis result for SHA-256 b698b3241d5b6515…

MALICIOUS

PDF

48.5 KB Created: 2020-08-16 17:55:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 37f9dfbdfeab72b7ace1738c40fe3257 SHA-1: 8bbe55afe33b07abee52d4c850cabe882a4e4b4d SHA-256: b698b3241d5b65152a0cfe804adbe0bb8844300b64dbdcfd96553b437b6c651e
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body and embedded links also indicate a lure for 'IBPS guide August month current affairs pdf', which is likely a pretext to drive users to click the malicious link. The PDF also contains a link farm, suggesting it's part of a larger SEO poisoning campaign to distribute malicious content.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=ibps+guide+august+month+current+affairs+pdf
    • http://files.losangelesaazk.org/uploads/1/3/0/7/130739810/zewotet_bomimipaf.pdf
    • http://files.demetriahillcannady.org/uploads/1/3/2/7/132740187/dffb5fe.pdf
    • http://files.cassidyraegaiter.com/uploads/1/3/1/4/131438019/cdbdb0a8e7a49f.pdf
    • http://files.missmegandevine.com/uploads/1/3/0/9/130969874/wilapiripegato.pdf
    • http://files.labcharter-pto.com/uploads/1/3/1/3/131379434/4b32ad6.pdf
    • https://cdn.shopify.com/s/files/1/0438/1320/8226/files/finomakudejipokamosase.pdf
    • https://cdn.shopify.com/s/files/1/0430/9988/1639/files/size_36c_breasts.pdf
    • https://cdn.shopify.com/s/files/1/0427/7485/5846/files/mojitodowejiloxovopugimoj.pdf
    • https://cdn.shopify.com/s/files/1/0436/2780/6883/files/19415213796.pdf
    • https://cdn.shopify.com/s/files/1/0437/8984/4631/files/al_munjid_arabic_to_urdu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/54811527610.pdf
    • https://cdn.shopify.com/s/files/1/0431/5699/6260/files/62923421675.pdf
    • https://cdn.shopify.com/s/files/1/0431/9238/5700/files/tixikusadizuzetiki.pdf
    • https://cdn.shopify.com/s/files/1/0436/9947/0486/files/alphabetize_in_google_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0431/2819/3184/files/lijigorawobewowex.pdf
    • https://cdn.shopify.com/s/files/1/0428/5048/4390/files/the_adventures_of_tom_sawyer_test.pdf
    • https://cdn.shopify.com/s/files/1/0428/6749/0975/files/anemia_etiology.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_off0000697e.bin
9ffadac5cabfe5876019738d720f1da6eab27546a0e212e4e37d9d7b56818cb1
pdf-font-stream PDF embedded font (sfnt) at offset 0x697E 5612 bytes
font_01_sfnt_off00007c5f.bin
5c1cdc09d7d5d12e3c1c1590b2ff07d744855eb21af0b3c46730fb8f39271b4c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C5F 10176 bytes
font_02_sfnt_off00009f3c.bin
c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e
pdf-font-stream PDF embedded font (sfnt) at offset 0x9F3C 16164 bytes