Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cc4319ac62167da…

MALICIOUS

PDF

56.5 KB Created: 2020-08-30 04:05:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 683af7d0128358bb53cff0f55b8d4fc0 SHA-1: f3593081af74d6006f0924cabca992cc2eb3f712 SHA-256: 1cc4319ac62167daa692a458e85dc6bcb1751090eb7cdf9d0d2c6ee3c4f23257
128 Risk Score

Malware Insights

MITRE ATT&CK
T1200 Hardware Add-in T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/wix?keyword=cdma+tool+dfs+professional+software'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. Additionally, a heuristic for a PDF link farm was triggered, suggesting a tactic to artificially inflate search engine rankings or distribute malicious links. The presence of a visual download button lure further supports the social engineering aspect of this attack.

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.ru/wix?keyword=cdma+tool+dfs+professional+software
    • https://cdn.shopify.com/s/files/1/0431/3595/9191/files/36181560230.pdf
    • https://cdn.shopify.com/s/files/1/0437/5989/4680/files/bft_rigel_5.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69440205977.pdf
    • https://cdn.shopify.com/s/files/1/0440/4091/3046/files/jigafe.pdf
    • https://cdn.shopify.com/s/files/1/0431/8111/3506/files/c_despawn_allplayers_number.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/9009713252.pdf
    • https://cdn.shopify.com/s/files/1/0438/7520/5288/files/57790375725.pdf
    • https://cdn.shopify.com/s/files/1/0444/4664/6439/files/attenuation_measurement_theory.pdf
    • https://cdn.shopify.com/s/files/1/0437/8525/7112/files/cabin_fever_3_dual_audio_720p.pdf
    • https://cdn.shopify.com/s/files/1/0431/3461/5706/files/binary_number_conversion.pdf
    • https://cdn.shopify.com/s/files/1/0431/5512/8480/files/1411676018.pdf
    • https://cdn.shopify.com/s/files/1/0430/5459/6250/files/rikamuzipifa.pdf
    • https://cdn.shopify.com/s/files/1/0435/1148/0472/files/que_es_una_bacteria_baar.pdf
    • https://cdn.shopify.com/s/files/1/0431/2521/1298/files/9556606386.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_off00008b7a.bin
a97b8429c4863ad9720989e19580c4281bded20fdf7ae2d607404e325e287601
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B7A 5088 bytes
font_01_sfnt_off00009cc5.bin
9a2a6ad5a7d82d478d35d7e5bfec7612a3d9fae1e1f429f2430ff61efce31ec3
pdf-font-stream PDF embedded font (sfnt) at offset 0x9CC5 13080 bytes
font_02_sfnt_off0000c6cb.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0xC6CB 4324 bytes