Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b1814971138be76…

MALICIOUS

PDF

45.2 KB Created: 2020-09-04 23:00:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 489539fb56a069ba815f428cd1887f84 SHA-1: 5cb6e77163af0b074185878ffaa2c3440771ac6a SHA-256: 0b1814971138be763f4a412341b7316299a71d4b4035b261d93a957bec21a7de
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document was flagged as malicious due to its inclusion of a redirector link pointing to known malicious infrastructure. It also contains a large number of links to other PDFs hosted on Shopify, suggesting a link farm or SEO manipulation tactic. While no scripts were directly extracted, the presence of embedded URLs and the overall structure indicate an attempt to lure users to malicious sites, likely for phishing or further malware delivery.

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.me/wix?keyword=guillain+barre+syndrome+treatment+guidelines+2018
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/5385/9494/files/winogadetewajijotowuvepa.pdf
    • https://cdn.shopify.com/s/files/1/0440/6122/9206/files/logitech_gaming_software_not_detecting_headset.pdf
    • https://cdn.shopify.com/s/files/1/0432/7024/2460/files/neserasusawexipawafapasu.pdf
    • https://cdn.shopify.com/s/files/1/0431/9857/8847/files/aldridge_school_sixth_form.pdf
    • https://cdn.shopify.com/s/files/1/0437/0015/8629/files/34356870820.pdf
    • https://cdn.shopify.com/s/files/1/0459/9165/7631/files/application_writing_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0429/5294/9913/files/jakipegowowivodalepivutu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3598/4029/files/27697208743.pdf
    • https://cdn.shopify.com/s/files/1/0464/4903/3384/files/6809897164.pdf
    • https://cdn.shopify.com/s/files/1/0441/4488/5912/files/media_player_classic_321_full_version.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/libidurekatomanazavevufi.pdf
    • https://cdn.shopify.com/s/files/1/0440/5470/8389/files/munimuwaranalapepi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8231/7975/files/44048462915.pdf
    • https://static.usrfiles.com/ugd/e1d12c_71bc2b90310b450a8addb08f2e032f85.pdf
    • https://static.usrfiles.com/ugd/ee6770_34f17fd0890b4d5e90839b458ae31b09.pdf
    • https://static.usrfiles.com/ugd/33a2e4_31b59a77ba4449298aac70c9a6c82beb.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e1b.bin
ec129acbcc4147c0602ce3f49a205db1afab7c9a5c07d23500c26770c11bc7a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E1B 5936 bytes
font_01_sfnt_off00008241.bin
bb50b2ee5e5108228d11296bcc0b20a3245453ffc9a8fa9950bfcd2aac70098e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8241 11108 bytes

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