Malicious PDF — malware analysis report

Static analysis result for SHA-256 e24c825a3e862f5a…

MALICIOUS

PDF

60.5 KB Created: 2020-08-14 20:52:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ae6b56c5fa7fddb38d7db6806fb2ee0 SHA-1: f73249cc516e694fe344a4ab8778588fab2596a5 SHA-256: e24c825a3e862f5a32ea5fae332b74fbec01413f724d233ae1ccfe218a15f2b2
120 Risk Score

Malware Insights

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

The PDF document was generated by wkhtmltopdf and contains a large number of embedded links, many of which point to shopify domains. One specific URL, https://ttraff.cc/pify?keyword=limiting+reagent+worksheet+3nh4no3, is identified as a known malicious redirector. The presence of numerous external links suggests an attempt to manipulate search engine rankings or distribute malicious content through a link farm. No scripts were extracted from this sample.

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.cc/pify?keyword=limiting+reagent+worksheet+3nh4no3
    • http://files.localdmvhomes.com/uploads/1/3/0/8/130814232/6354617.pdf
    • http://files.tickettoridegreatloop.com/uploads/1/3/0/8/130813860/e4101b0b03d3de.pdf
    • http://files.dicksmarketgardens.com/uploads/1/3/1/3/131398504/kawujoxak.pdf
    • http://wutedowo.aftabhafeez.com/uploads/1/3/1/3/131384429/2172458.pdf
    • http://files.baseballforyouth.com/uploads/1/3/1/4/131410094/d01b94f17819.pdf
    • https://cdn.shopify.com/s/files/1/0430/6737/5770/files/ariston_water_heater_installation_manual.pdf
    • https://cdn.shopify.com/s/files/1/0436/6431/0425/files/best_fast_android_emulator_for_windows_10.pdf
    • https://cdn.shopify.com/s/files/1/0434/5289/1298/files/99100538048.pdf
    • https://cdn.shopify.com/s/files/1/0438/1959/7981/files/bazisusogedaronigot.pdf
    • https://cdn.shopify.com/s/files/1/0434/5751/1590/files/32688110893.pdf
    • https://cdn.shopify.com/s/files/1/0437/8004/7010/files/debilamatut.pdf
    • https://cdn.shopify.com/s/files/1/0437/1139/8041/files/wikawebodajivakawaliji.pdf
    • https://cdn.shopify.com/s/files/1/0434/2821/6997/files/zasajokinagopuzepof.pdf
    • https://cdn.shopify.com/s/files/1/0438/3073/9106/files/joxebepipugo.pdf
    • https://cdn.shopify.com/s/files/1/0438/8447/8632/files/senovafezabigumok.pdf
    • https://cdn.shopify.com/s/files/1/0436/0624/5539/files/bikhre_moti_urdu_free_download.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007db6.bin
2f58f0947010850656523313509d64feb06ff55bb20fe33575a0be3029be9035		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DB6 5204 bytes
font_01_sfnt_off00008f4d.bin
6dfd57f86e00ab2570289466221f95e986b31382483fb967374b0d645d6b2430		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F4D 15824 bytes
font_02_sfnt_off0000c102.bin
e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC102 16204 bytes
font_03_sfnt_off0000d630.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD630 4324 bytes

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