Malicious PDF — malware analysis report

Static analysis result for SHA-256 100ad50cf6f079b7…

MALICIOUS

PDF

50.5 KB Created: 2020-08-09 08:27:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e0c735fcda36a8983e31537098569cef SHA-1: 3384c1f3fbf408b0e23fe81336c25f73f281def5 SHA-256: 100ad50cf6f079b708b1f9f4738005a5055a0c182b6ef29a8d7a4d22b3a54fc1
154 Risk Score

Malware Insights

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

The PDF contains numerous links, including a critical redirector to 'ttraff.cc', suggesting a phishing or malware distribution attempt. The document body, though partially corrupted, includes text related to PDF downloads and the malicious URL, reinforcing the lure. The presence of multiple embedded links, many pointing to Shopify, indicates a link farm strategy 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.cc/pify?keyword=deep+learning+adaptive+computation+and+machine+learning+pdf+download
    • http://files.2portageesproductions.com/uploads/1/3/0/7/130738501/zifanafesibi.pdf
    • http://files.pssdan.com/uploads/1/3/0/8/130815228/gujuzuguzovir.pdf
    • http://files.dogtrainingmidwales.co.uk/uploads/1/3/0/7/130775504/wugowifixosaru_dazedanadoveku_wesakubezuk.pdf
    • http://neminasij.birthto5partnerships.org/uploads/1/3/0/9/130969204/lebewupoluzi.pdf
    • http://files.aatuners.com/uploads/1/3/2/6/132695915/koxojalato.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0445/6457/8463/files/castrol_lmx_li_komplexfett.pdf
    • https://cdn.shopify.com/s/files/1/0436/1653/4685/files/shock_therapy_witcher_3.pdf
    • https://cdn.shopify.com/s/files/1/0432/2738/1920/files/99341352272.pdf
    • https://cdn.shopify.com/s/files/1/0429/5714/4230/files/kolaroji.pdf
    • https://cdn.shopify.com/s/files/1/0433/9187/7283/files/81472032747.pdf
    • https://cdn.shopify.com/s/files/1/0427/5165/6102/files/kurokoleniraw.pdf
    • https://cdn.shopify.com/s/files/1/0429/6428/7651/files/barracuda_programmer.pdf
    • https://cdn.shopify.com/s/files/1/0431/8255/5297/files/24759371543.pdf
    • https://cdn.shopify.com/s/files/1/0428/0041/4883/files/sizitexewofemalapirepidod.pdf
    • https://cdn.shopify.com/s/files/1/0434/5420/2013/files/6691218964.pdf
    • https://cdn.shopify.com/s/files/1/0435/5578/2817/files/38197721846.pdf
    • https://cdn.shopify.com/s/files/1/0428/9599/9129/files/37407630447.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://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c1c.bin
a606a6dede3b99472d2ac97761204782646b5f75106b48d1abccbe9a99ca9a4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C1C 6440 bytes
font_01_sfnt_off00006c10.bin
d56cfd7bb60cdb07e04d9f60d20c8ae65f1a1f35f73a62949fe1cd13df7adbaf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C10 5544 bytes
font_02_sfnt_off00007edf.bin
c97357ecfad62327ea5865e9fff9278d0c615d3e0a004233d009aafc9aff7252		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EDF 10760 bytes
font_03_sfnt_off0000a3d0.bin
6e314908d86deb53635398e2e3fcae76b1cd7748f37f26765e8baf72459ce36a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA3D0 16896 bytes

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