Malicious PDF — malware analysis report

Static analysis result for SHA-256 93b4c473d45bccca…

MALICIOUS

PDF

38.9 KB Created: 2020-08-11 08:51:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1d5f5d8617471e89258da33a39bbaea0 SHA-1: f4276a0869b68219327697fc934e42b648b27a49 SHA-256: 93b4c473d45bcccace5345e888efe69166b0cad630653a4f9de92849c244e8ce
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with a critical heuristic identifying a redirector link to 'ttraff.com'. This suggests a phishing or redirection attack, likely aiming to lure users to malicious content. The document body, though heavily obfuscated, contains the same redirector URL and other Shopify links, reinforcing the attack pattern. No scripts were extracted, but the PDF structure and link farm indicate a malicious intent to redirect users.

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.com/pify?keyword=catalogue+oriflame+2020+pdf
    • http://bemoz.dontlookdowntheatre.ca/uploads/1/3/0/7/130776078/28e761d3f0.pdf
    • http://files.crocusacademymainstreet.com/uploads/1/3/1/8/131856602/borunexorowud.pdf
    • http://vagitelot.shaydanielleacademy.com/uploads/1/3/1/4/131406893/pejipesowanizeja.pdf
    • http://files.petrasith.com/uploads/1/3/1/3/131379543/6c501c.pdf
    • https://cdn.shopify.com/s/files/1/0432/5575/9011/files/symbolism_in_poetry.pdf
    • https://cdn.shopify.com/s/files/1/0428/2348/3548/files/background_opacity_css.pdf
    • https://cdn.shopify.com/s/files/1/0434/8336/5528/files/dulewaximix.pdf
    • https://cdn.shopify.com/s/files/1/0434/2887/2359/files/kerako.pdf
    • https://cdn.shopify.com/s/files/1/0432/0044/6626/files/zodetarapepa.pdf
    • https://cdn.shopify.com/s/files/1/0437/8044/0215/files/rugofox.pdf
    • https://cdn.shopify.com/s/files/1/0429/6717/1223/files/wefopesugagapaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/81397135942.pdf
    • https://cdn.shopify.com/s/files/1/0432/9842/2934/files/reading_practice_book_grade_2.pdf
    • https://cdn.shopify.com/s/files/1/0430/8588/9689/files/58967106026.pdf
    • https://cdn.shopify.com/s/files/1/0429/2552/3103/files/39297754513.pdf
    • https://cdn.shopify.com/s/files/1/0429/1290/7427/files/203200760.pdf
    • https://cdn.shopify.com/s/files/1/0431/5529/2317/files/lucas_girling_brake_system_manual.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_off0000464f.bin
8117b843e3390751f8b14533448074860c68b78198997102876d936cd8c9dbe6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x464F 5360 bytes
font_01_sfnt_off00005876.bin
a0d92833b442ed9d434366f767948ccb50c30212fb773c1b8e5bfd8aa4dbc847		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5876 9092 bytes
font_02_sfnt_off000077c4.bin
1f0630638379ff638aa0e03b6679a7277a0e938e784e76bf02ae120896e0c400		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77C4 16512 bytes

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