Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cd3ecd2c65b752d…

MALICIOUS

PDF

43.6 KB Created: 2020-08-06 21:38:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79ad7ff70a46baa305c008e9681621df SHA-1: f9c1becd8f6ea6b2f4ff145c578b705dccf4e713 SHA-256: 0cd3ecd2c65b752d07b476eee737b29c715cd70e2e8d4eda42b9b46a35798f17
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs. The primary malicious link, https://ttraff.com/pify?keyword=bhavani+ashtakam+sanskrit+pdf, is identified as a malicious redirector. The document body is heavily obfuscated and contains junk data, but the presence of numerous links suggests a link farm or redirection attack designed to lead users to malicious content. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=bhavani+ashtakam+sanskrit+pdf
    • http://files.abundantsilence.org/uploads/1/3/1/4/131438419/rivafefote.pdf
    • http://gemeri.captainkevinrickon.com/uploads/1/3/0/7/130775350/b48a26806b21c03.pdf
    • http://files.gdcus.org/uploads/1/3/1/4/131409017/5388584.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://cdn.shopify.com/s/files/1/0431/7754/1787/files/sigagiles.pdf
    • https://cdn.shopify.com/s/files/1/0433/4547/7783/files/notaj.pdf
    • https://cdn.shopify.com/s/files/1/0437/1211/8952/files/minecraft_education_edition_apk.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/83390791822.pdf
    • https://cdn.shopify.com/s/files/1/0429/8381/7375/files/57179592472.pdf
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/pupelekive.pdf
    • https://cdn.shopify.com/s/files/1/0432/8236/6629/files/67253504472.pdf
    • https://cdn.shopify.com/s/files/1/0428/2669/4822/files/laminates_and_veneers_in_dentistry.pdf
    • https://cdn.shopify.com/s/files/1/0436/9465/3594/files/sonic_rpg_games.pdf
    • https://cdn.shopify.com/s/files/1/0437/6431/8359/files/a_wife_s_cry_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/6972/5080/files/wusisuvedenovagud.pdf
    • https://cdn.shopify.com/s/files/1/0435/0741/7253/files/automobile_engineering_book_download_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/julanefiwozuxam.pdf
    • https://cdn.shopify.com/s/files/1/0433/6277/9295/files/carmichael_numbers.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000612d.bin
63e999bd87ef7d1dd02bb96e47e30c08c874a37cc2dfec3e44ba557cc38a7550		 pdf-font-stream PDF embedded font (sfnt) at offset 0x612D 5424 bytes
font_01_sfnt_off0000737e.bin
84cf192b0451aa34078cca630089abcaf4532e29aa0abf0e2f9df54ac584b921		 pdf-font-stream PDF embedded font (sfnt) at offset 0x737E 10032 bytes
font_02_sfnt_off00009619.bin
80599fa541b0e4cc135e3c67fc2fc925d7cf48f2fd8771cbf04a988821d8457e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9619 2744 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.