Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0e33d5a02e58bed…

MALICIOUS

PDF

63.5 KB Created: 2020-08-01 17:40:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e627777f7826b23bde751565850c5e08 SHA-1: 78c6a2a22300057390ef6008e03a2c8e19b51bec SHA-256: e0e33d5a02e58bed5c649be548b857fcf68fc0a208c5986bd2c2e4819041dcd2
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=hyster+forklift+manual+pdf+free'. This URL is embedded within the document's text, suggesting a social engineering lure to trick users into clicking it. The ML classifier also strongly flagged this PDF as malicious. The primary goal appears to be redirecting users to malicious infrastructure.

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/pify?keyword=hyster+forklift+manual+pdf+free
    • http://files.cgcatogo.com/uploads/1/3/1/4/131453665/vexodomiwonitaluvi.pdf
    • http://files.planchelsea.com/uploads/1/3/1/4/131438111/ximupevolejija_fogibalijesu_bozopuremaxu.pdf
    • http://files.cbspmitchelstown.com/uploads/1/3/1/4/131407492/4963013.pdf
    • http://files.thebotanicalbrownie.com/uploads/1/3/1/6/131606876/4300802.pdf
    • https://cdn.shopify.com/s/files/1/0435/2675/0357/files/27728142377.pdf
    • https://cdn.shopify.com/s/files/1/0432/8800/2710/files/22110072475.pdf
    • https://cdn.shopify.com/s/files/1/0434/3015/0309/files/74930032530.pdf
    • https://cdn.shopify.com/s/files/1/0438/9647/1707/files/zadofaziwewomibuvuvizixud.pdf
    • https://cdn.shopify.com/s/files/1/0428/7247/1715/files/49416367393.pdf
    • https://cdn.shopify.com/s/files/1/0431/7875/4199/files/82858264801.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/surorut.pdf
    • https://cdn.shopify.com/s/files/1/0431/0279/7986/files/bekugarizaretupax.pdf
    • https://cdn.shopify.com/s/files/1/0432/0247/8242/files/9471755517.pdf
    • https://cdn.shopify.com/s/files/1/0432/0156/0737/files/20902720792.pdf
    • https://cdn.shopify.com/s/files/1/0440/1322/4094/files/7176735067.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/
    • https://cdn.shopify.com/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009d43.bin
2fed500e56764e2d2c9b36af49fada3df069f1fdd4ac063748ef417ae0f3de3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D43 5316 bytes
font_01_sfnt_off0000af49.bin
e36808bbb80b01a3d93768d8b0e0ddf60abd56cb6e19b725c5c8bbb75a6fe8e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF49 13620 bytes
font_02_sfnt_off0000daf6.bin
aca9d55988c6676475e3b08f81553e0332b16fe059812fe008bdba06dc22cfc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDAF6 16316 bytes

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