Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0174bede1bcdfa6…

MALICIOUS

PDF

56.7 KB Created: 2020-07-30 11:46:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0f767c5edc928d087d73e9680ed4dd0b SHA-1: 8365e7d14252206884ac92e30921dc15bba65994 SHA-256: a0174bede1bcdfa6a478e02023e90a83ce28a44720ce1fe687885f7ba694555a
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'ttraff.com', which is a known malicious domain. Additionally, it hosts a large number of external PDF links, many hosted on 'cdn.shopify.com', suggesting a link farm or SEO poisoning tactic. The presence of a 'download button' heuristic further supports the lure-based attack pattern. No scripts were extracted, limiting the analysis of direct payload execution.

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=ncert+english+book+class+4+pdf
    • http://files.straystreetstnr.com/uploads/1/3/0/7/130775107/nasuketalawavemefu.pdf
    • http://files.donnajthomasartist.com/uploads/1/3/2/7/132712214/3741162.pdf
    • http://files.swcaasouthwest.com/uploads/1/3/1/0/131070619/6a991e2d7a.pdf
    • http://files.just4womendoc.com/uploads/1/3/1/3/131384025/58dbb8c76c.pdf
    • http://files.obgynassociatespc.com/uploads/1/3/2/6/132680796/sefikeb-pomonewitatuwox-wixozowesizak-jazuralewa.pdf
    • http://files.ju
    • https://cdn.shopify.com/s/files/1/0437/7870/3521/files/73428221652.pdf
    • https://cdn.shopify.com/s/files/1/0433/8896/0933/files/pepiwudobegipoj.pdf
    • https://cdn.shopify.com/s/files/1/0430/9807/9399/files/xavifaxadilivunabek.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zofoxi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6249/3345/files/48388473020.pdf
    • https://cdn.shopify.com/s/files/1/0430/6078/9409/files/50938226181.pdf
    • https://cdn.shopify.com/s/files/1/0435/9494/0573/files/72294569801.pdf
    • https://cdn.shopify.com/s/files/1/0439/4775/3640/files/74560479484.pdf
    • https://cdn.shopify.com/s/files/1/0434/1671/5429/files/gowiz.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_off00008486.bin
e9b1fb999f87904cea11c7eeac9ff81332bc1319151bd18e0317a67273c0c7eb
pdf-font-stream PDF embedded font (sfnt) at offset 0x8486 5464 bytes
font_01_sfnt_off00009712.bin
425dac44cab7fd14291f23f8d5003e772ddc0fb02079b38e58a199f567b31087
pdf-font-stream PDF embedded font (sfnt) at offset 0x9712 10252 bytes
font_02_sfnt_off0000ba13.bin
dee6cee333d7d31a37f8b9436ee873576b5c485b5c9c3d8e306af2f82861c227
pdf-font-stream PDF embedded font (sfnt) at offset 0xBA13 8004 bytes