Malicious PDF — malware analysis report

Static analysis result for SHA-256 59bd5d4c80558186…

MALICIOUS

PDF

40.1 KB Created: 2020-08-04 14:11:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 597f87a79b6dafcb9ea4771b3abe9064 SHA-1: 95d856c0025d30f52e1e4dba5113eaf244aae77b SHA-256: 59bd5d4c80558186c1a6af4ae039d7d73af83ac881251534053f917985d2d7a5
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary link pointing to a known malicious redirector infrastructure. The document body, though obfuscated, contains the URL that triggers the malicious redirector. This indicates the document's purpose is to redirect users to malicious content, likely for phishing or malware distribution.

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.ru/pify?keyword=child+development+an+active+learning+approach+free+pdf
    • http://files.dctcgreenhouse.com/uploads/1/3/1/4/131408172/9602833.pdf
    • http://files.southamboyfirstaid.org/uploads/1/3/2/6/132695543/c773bc.pdf
    • http://files.opera-audition.com/uploads/1/3/0/7/130775735/2c835f611abd.pdf
    • http://files.pdxprays.com/uploads/1/3/1/3/131383018/wikixawasagi.pdf
    • https://cdn.shopify.com/s/files/1/0431/2861/9168/files/16485491922.pdf
    • https://cdn.shopify.com/s/files/1/0429/1729/8329/files/59725789040.pdf
    • https://cdn.shopify.com/s/files/1/0428/2354/9094/files/63635153932.pdf
    • https://cdn.shopify.com/s/files/1/0437/6592/3992/files/93738432974.pdf
    • https://cdn.shopify.com/s/files/1/0436/7928/5401/files/rajudoxiget.pdf
    • https://cdn.shopify.com/s/files/1/0429/9096/0799/files/kumujinugiru.pdf
    • https://cdn.shopify.com/s/files/1/0438/0806/3649/files/daddy_s_angel_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0432/0215/0557/files/driver_easy_crack.pdf
    • https://cdn.shopify.com/s/files/1/0440/4117/5190/files/thracia_776_characters.pdf
    • https://cdn.shopify.com/s/files/1/0433/4691/9579/files/kesolutowuribazulufawa.pdf
    • https://cdn.shopify.com/s/files/1/0431/7865/5903/files/study_guide_and_intervention_answers_algebra_2.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005db8.bin
dd3d476198823c2c5b9813b95c9fb3da5199af0bb62692e312c6bfbc9f3da3b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB8 5356 bytes
font_01_sfnt_off00006fc5.bin
68776753238e11e07a177c0be77c045432f7b8c23a9449342dc948b0b9fe7de4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FC5 10408 bytes

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