Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1172201e506abcb…

MALICIOUS

PDF

48.2 KB Created: 2020-08-08 14:29:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: da9eaa0400088e95d3a708fd40ad68f5 SHA-1: 91c00a1f1f91729ae806944d288b4e83884790fe SHA-256: c1172201e506abcb4d014875c1ee9c15a652348bf284d8193f576b1b5ea0173b
152 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as a 'metro map delhi pdf' search result, but it redirects to a malicious URL (https://ttraff.cc/wb?keyword=metro%20map%20delhi%20pdf). This indicates a social engineering attempt to trick users into clicking a malicious link. The ML classifier strongly supports the malicious verdict.

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.cc/wb?keyword=metro%20map%20delhi%20pdf
    • http://files.dodlestonparishcouncil.co.uk/uploads/1/3/0/7/130775822/bafoxirafimawazamevi.pdf
    • http://files.mychristiancounsel.com/uploads/1/3/1/3/131383864/xitobekef-pazefeguxobijus-wovimixagilew-zutixeb.pdf
    • http://files.imyourinsurancelady.com/uploads/1/3/0/8/130813592/8e66b14e64c.pdf
    • https://cdn.shopify.com/s/files/1/0435/5689/6927/files/9112495885.pdf
    • https://cdn.shopify.com/s/files/1/0433/5019/6392/files/7127303993.pdf
    • https://cdn.shopify.com/s/files/1/0429/4079/2999/files/windows_8_dreamspark.pdf
    • https://cdn.shopify.com/s/files/1/0438/3090/2946/files/pharma_interview_questions_and_answers_for_freshers_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/1044/0862/files/35459166253.pdf
    • https://cdn.shopify.com/s/files/1/0428/7476/5475/files/64218392848.pdf
    • https://cdn.shopify.com/s/files/1/0428/0988/4838/files/lonifunexifo.pdf
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/88446405346.pdf
    • https://cdn.shopify.com/s/files/1/0435/2868/3672/files/in_aid_of_the_myreque.pdf
    • https://cdn.shopify.com/s/files/1/0431/6741/6488/files/jetononunofu.pdf
    • https://cdn.shopify.com/s/files/1/0435/9513/7181/files/diehard_battery_charger_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/ascii_escape_code.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_off0000727f.bin
0114a87cbccaabd4b34ac24bcf1abaf0df0313a94b095496955e732ee1632c01		 pdf-font-stream PDF embedded font (sfnt) at offset 0x727F 4788 bytes
font_01_sfnt_off000082c9.bin
d507f4087d0fb758b74d932b989ba663712675be841b5e6b8b866091fc7fd112		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82C9 10312 bytes
font_02_sfnt_off0000a601.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA601 4324 bytes

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