Malicious PDF — malware analysis report

Static analysis result for SHA-256 46048aba3cf5ee73…

MALICIOUS

PDF

46.9 KB Created: 2020-08-17 00:31:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a16c5c519c7905db1c69d8118113e2be SHA-1: aa34fd653dc821e498cfff9b5956da906337ebb8 SHA-256: 46048aba3cf5ee739fcf44cfff3937ef63bac774943694de7b12586c0f43f048
150 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to an 'exam with answer' and the malicious URL. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating a phishing or social engineering attempt to direct users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=example+of+abstract+drawing+exam+with+answer
    • http://files.dannytropicals.com/uploads/1/3/2/8/132816091/900079.pdf
    • https://cdn.shopify.com/s/files/1/0434/5122/0134/files/sewog.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29025511016.pdf
    • https://cdn.shopify.com/s/files/1/0437/3548/2517/files/21092530977.pdf
    • https://cdn.shopify.com/s/files/1/0440/7335/3366/files/wuvemaverelivadabejanasu.pdf
    • https://cdn.shopify.com/s/files/1/0435/2868/3674/files/86628139422.pdf
    • https://cdn.shopify.com/s/files/1/0436/6788/2134/files/bah_c3_a7e_dekoru.pdf
    • https://cdn.shopify.com/s/files/1/0434/3123/1637/files/pelekesapidebixevijit.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dotalufakelani.pdf
    • https://cdn.shopify.com/s/files/1/0434/6488/4384/files/xasuberu.pdf
    • https://cdn.shopify.com/s/files/1/0429/0979/4463/files/45587008475.pdf
    • https://cdn.shopify.com/s/files/1/0433/6667/8686/files/hunger_games_trilogia_ita_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0435/4041/4615/files/fatomapiworaw.pdf
    • https://cdn.shopify.com/s/files/1/0435/0279/6964/files/book_of_exalted_deeds_5e.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_off000069e6.bin
e7db60afed16c7ba67585a9aeb9793732c619380a532b6135e855f076a143ee6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69E6 5616 bytes
font_01_sfnt_off00007ce8.bin
f91737f9fc2c42b8536e8ba99fe383fdc8b1eac30f0167ae4fec073be47fca82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CE8 10300 bytes
font_02_sfnt_off00009fcb.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FCB 4324 bytes

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