Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b028b1ed5c78184…

MALICIOUS

PDF

59.1 KB Created: 2020-08-19 00:33:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: af70cf5dae566763b493e4747c168a73 SHA-1: 77f7e3e4cb6f14b2421fa6215789322405bafc5e SHA-256: 8b028b1ed5c78184549fe11edd571418992bc6bd1c7c46917ae4012cb050d195
128 Risk Score

Malware Insights

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

The PDF contains a lure for a "video show apk hack mod" and embeds numerous links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic identified a PDF redirector link pointing to ttraff.com, which is known malicious infrastructure. The document body, though heavily obfuscated, contains the same lure and URL. This suggests the PDF is designed to lead users to malicious sites, likely for malware distribution or phishing.

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=video+show+apk+hack+mod
    • http://files.calicreativephotography.com/uploads/1/3/1/4/131438483/6877885.pdf
    • http://files.anis.nu/uploads/1/3/1/3/131380803/bevobu-vuteni-tadogavis-kevefezut.pdf
    • http://files.peoriasupertow.com/uploads/1/3/0/7/130740212/dupiroxaki.pdf
    • https://cdn.shopify.com/s/files/1/0440/5598/6326/files/romasemoraxaxababetu.pdf
    • https://cdn.shopify.com/s/files/1/0433/5943/6951/files/dozudigomumidoserike.pdf
    • https://cdn.shopify.com/s/files/1/0433/4488/7963/files/vumomitoxilurovu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/gudemodukeralo.pdf
    • https://cdn.shopify.com/s/files/1/0437/8814/0696/files/mangatoon_apk_mod.pdf
    • https://cdn.shopify.com/s/files/1/0433/2670/1723/files/99955108655.pdf
    • https://cdn.shopify.com/s/files/1/0433/2129/5003/files/wawebivozapijevodedemer.pdf
    • https://cdn.shopify.com/s/files/1/0428/7338/9223/files/tukizozubokonijakesule.pdf
    • https://cdn.shopify.com/s/files/1/0434/6239/4008/files/kiwikesojabomubafaxuwe.pdf
    • https://cdn.shopify.com/s/files/1/0440/1122/5246/files/36850246601.pdf
    • https://cdn.shopify.com/s/files/1/0448/4779/2288/files/anomalous_retinal_correspondence.pdf
    • https://cdn.shopify.com/s/files/1/0434/5508/6742/files/wafaweditodumusalosagu.pdf
    • https://cdn.shopify.com/s/files/1/0429/9925/1093/files/xovadumitamod.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
stream_005_off0000abf7.bin
553c7267d4fe1df56cb72a12cb40b5b99632a74eb0cdcaac50178f9e2f6f19f7
decompressed-pdf-stream PDF FlateDecoded stream at offset 0xABF7 27992 bytes
font_00_sfnt_off00007672.bin
cace1e06c6bffd92051be0f25cfa6e818143ed11adaf96cc34fc45d515aeb3c8
pdf-font-stream PDF embedded font (sfnt) at offset 0x7672 5304 bytes
font_01_sfnt_off00008878.bin
89fb29c708c2671a1f910f1386b9c35424eea843819b4320b95f806b3e22fb53
pdf-font-stream PDF embedded font (sfnt) at offset 0x8878 10296 bytes