Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c1d166119d8780c…

MALICIOUS

PDF

42.2 KB Created: 2020-09-08 21:59:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe79fab1f04af3ffb0f0d65e4e7b4db8 SHA-1: 3664131606f92a143fa50e578e5ca6727cb15ebc SHA-256: 6c1d166119d8780c02ae0e56992bc692a1cec8dd59cef51972c12c48d06f7bc6
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing or scam attempt. The document body and embedded links suggest a lure related to product information, likely to trick users into visiting the malicious URL. The presence of numerous links, many pointing to benign content, suggests a link farm used to obscure the malicious destination.

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=ikea+low+profile+platform+bed
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/7836c9_205d7b971ace49f1a407a07bfc11cf8c.pdf
    • https://static.usrfiles.com/ugd/271e65_b8cc730f8c0f4a63a72f5ae552123d51.pdf
    • https://static.usrfiles.com/ugd/ced2dc_14eea3d776f14d7e9758524df35348aa.pdf
    • https://static.usrfiles.com/ugd/38bf1f_3261de46e5614515bf79726c09cf05d0.pdf
    • https://cdn.shopify.com/s/files/1/0461/3180/6376/files/how_to_say_bye_in_german_informal.pdf
    • https://cdn.shopify.com/s/files/1/0429/1615/1455/files/happy_birthday_images_for_son_free.pdf
    • https://cdn.shopify.com/s/files/1/0440/1099/5862/files/editortemplatename_kendo_grid_mvc.pdf
    • https://cdn.shopify.com/s/files/1/0430/9680/1434/files/java_swing_ebook_download_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/5539/0630/files/sasiwet.pdf
    • https://static.usrfiles.com/ugd/c3f59f_0ece177f86054e209aa32aabeec5dbff.pdf
    • https://static.usrfiles.com/ugd/6908d7_9a0e9db1513e46f3aa94c0f69453e9eb.pdf
    • https://static.usrfiles.com/ugd/eda9ba_925cf96be5754f38aa5644ff18692910.pdf
    • https://static.usrfiles.com/ugd/a43ec6_1d2e9839f29e4eca9be298d5a9f7cccf.pdf
    • https://cdn.shopify.com/s/files/1/0433/5036/0232/files/pokemon_sky_tower.pdf
    • https://cdn.shopify.com/s/files/1/0439/0541/7371/files/furokazo.pdf
    • https://cdn.shopify.com/s/files/1/0437/1985/2187/files/joragotarek.pdf
    • https://cdn.shopify.com/s/files/1/0434/7029/1096/files/avengers_endgame_assemble_song.pdf
    • https://cdn.shopify.com/s/files/1/0437/5294/7873/files/80701390777.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_off00006638.bin
f82f9433ba990c958d9ce37bab6d00c77e6275c49db8aaf74d6e59905fb11ae3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6638 5244 bytes
font_01_sfnt_off00007809.bin
dd07bc340a438256388998eaaba2a98909ceff1e2b3057834ce7ffa94ddffdf4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7809 10488 bytes

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