Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee80ff61e5a3c7b2…

MALICIOUS

PDF

41.6 KB Created: 2020-08-04 21:30:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f1e3195ef919c8700c745758a82d7e2c SHA-1: 41d9e4e476dd6577218dc40657bf144cf16bd2d4 SHA-256: ee80ff61e5a3c7b2e9a2dc02c873d4d86b2a7ee498504449418ebe1d25195ab5
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/pify?keyword=kp+astrology+books+in+tamil+pdf`. This URL is likely used to redirect users to a malicious site. The document also contains a large number of external PDF links, many hosted on `cdn.shopify.com`, suggesting a link farm or SEO poisoning attempt. The ML classifier strongly flagged this PDF as malicious.

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=kp+astrology+books+in+tamil+pdf
    • http://files.teamnewbalancegvl.com/uploads/1/3/2/6/132682737/1b598.pdf
    • http://files.weatoguefarm.com/uploads/1/3/2/7/132710748/69c6696b.pdf
    • http://tejar.adairsvillechristianchurch.org/uploads/1/3/1/4/131437604/6579342.pdf
    • https://cdn.shopify.com/s/files/1/0430/4656/8098/files/vutugunuxudaguru.pdf
    • https://cdn.shopify.com/s/files/1/0433/8286/6083/files/isotropic_orthotropic_and_anisotropic_materials.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/97132184300.pdf
    • https://cdn.shopify.com/s/files/1/0432/2885/6477/files/46981793768.pdf
    • https://cdn.shopify.com/s/files/1/0448/3658/5629/files/el_caballero_de_la_armadura_oxidada_analisis.pdf
    • https://cdn.shopify.com/s/files/1/0437/9430/1085/files/16565898407.pdf
    • https://cdn.shopify.com/s/files/1/0438/9571/8040/files/19987147659.pdf
    • https://cdn.shopify.com/s/files/1/0431/3477/9553/files/39238447026.pdf
    • https://cdn.shopify.com/s/files/1/0429/9204/2137/files/gugoguzibule.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/31052941417.pdf
    • https://cdn.shopify.com/s/files/1/0433/5425/9606/files/matiwo.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_off00004d00.bin
9bf0eaaae2e208b41cdceab3bebf06df22bac5c4c1f70ad67532701692079aaf
pdf-font-stream PDF embedded font (sfnt) at offset 0x4D00 5636 bytes
font_01_sfnt_off00006022.bin
57bc5dc933ac28d34143d572ab9f537b95500d64c14c1ecc630d6d7d2733b9f2
pdf-font-stream PDF embedded font (sfnt) at offset 0x6022 6548 bytes
font_02_sfnt_off000074f9.bin
6931fb366c5c34ee816db750939ceeda4e7299a4b456f23926d579d1118a22f0
pdf-font-stream PDF embedded font (sfnt) at offset 0x74F9 10732 bytes