Malicious PDF — malware analysis report

Static analysis result for SHA-256 07758fea6321b819…

MALICIOUS

PDF

50.6 KB Created: 2020-08-10 07:15:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b14482367eefd4e6dcaf3d94852fc108 SHA-1: 311e21ebefb132afda256ec1f4b6681c5334b5c7 SHA-256: 07758fea6321b8195e85ca4b06bcac7a1867f7214f4cb5a10483d72ac6d60fd5
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a link farm designed to redirect users to malicious infrastructure. The primary redirector URL is https://ttraff.com/pify. This suggests a phishing or scam attempt, likely delivered as a spearphishing attachment. No scripts were extracted, limiting the analysis of dynamic behavior.

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=difference+between+homogeneous+and+heterogeneous+catalysis+pdf
    • http://files.finleyshowsociety.org/uploads/1/3/0/9/130969710/zelezul.pdf
    • http://files.txlpcsupervision.com/uploads/1/3/1/3/131382590/figojawaponuf.pdf
    • http://files.maypopshopstore.com/uploads/1/3/2/7/132740399/danofapukepufit.pdf
    • http://wiluzidaj.goto2025.com/uploads/1/3/1/6/131636725/gabofeni.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0427/7967/2735/files/54881601295.pdf
    • https://cdn.shopify.com/s/files/1/0428/5464/5916/files/molofomolowo.pdf
    • https://cdn.shopify.com/s/files/1/0428/6146/1670/files/87165974300.pdf
    • https://cdn.shopify.com/s/files/1/0432/3685/1874/files/xipedafo.pdf
    • https://cdn.shopify.com/s/files/1/0430/4253/7629/files/29128727208.pdf
    • https://cdn.shopify.com/s/files/1/0428/3655/7987/files/10th_maths_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/7473/8593/files/sing_to_jehovah_songbook.pdf
    • https://cdn.shopify.com/s/files/1/0432/8462/7616/files/manititag.pdf
    • https://cdn.shopify.com/s/files/1/0430/2356/4957/files/4557278931.pdf
    • https://cdn.shopify.com/s/files/1/0431/5791/3754/files/elementary_linear_algebra_larson_solutions_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/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007182.bin
16b197a958e2ef773b6f09c1409dd97fcf2821d5186b5558ed13f485097ed234		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7182 5904 bytes
font_01_sfnt_off0000858d.bin
2723f8eda4f7735402142ba709529ed1bf5a053f85c45dd81a249f59d5a0c485		 pdf-font-stream PDF embedded font (sfnt) at offset 0x858D 9960 bytes
font_02_sfnt_off0000a7d3.bin
01e49661dbdd7b4823267156d85e4b6ddc25a6de2ac0af4d78c137cfa2b371b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA7D3 16100 bytes

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