Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d36e040a15204b5…

MALICIOUS

PDF

38.8 KB Created: 2020-08-05 04:06:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f14205c5c8651a9a0f14b7a3b304be38 SHA-1: 6882da88ce41b94304ac6f6c04151ad3b5875f39 SHA-256: 3d36e040a15204b519b4e5633c85197221918f0bc0f1a1cbca983fa536e2bd05
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm designed to appear as a technical drawing guide, but it redirects to malicious infrastructure. The primary malicious URL identified is https://ttraff.ru/pify?keyword=technical+drawing+with+engineering+graphics+14th+edition+pdf+free. This suggests a social engineering attack aiming to drive traffic to potentially harmful sites, likely for further exploitation or malware delivery.

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.ru/pify?keyword=technical+drawing+with+engineering+graphics+14th+edition+pdf+free
    • http://files.houseofnonie.com/uploads/1/3/1/0/131070702/541079.pdf
    • http://files.brandnewdaywellness.com/uploads/1/3/1/3/131380390/gitagapelikojifudi.pdf
    • http://files.loploptravels.com/uploads/1/3/0/8/130814666/e30fc2f3.pdf
    • http://files.goodmedicineproductions.org/uploads/1/3/1/4/131483281/rilom-pubakixepevujim-sefosonare.pdf
    • https://cdn.shopify.com/s/files/1/0439/1020/1499/files/9950535956.pdf
    • https://cdn.shopify.com/s/files/1/0431/4988/5606/files/what_is_aae_file.pdf
    • https://cdn.shopify.com/s/files/1/0427/9320/5916/files/54333944436.pdf
    • https://cdn.shopify.com/s/files/1/0429/5062/3385/files/8368763836.pdf
    • https://cdn.shopify.com/s/files/1/0438/6599/7472/files/codex_adeptus_custodes_8e.pdf
    • https://cdn.shopify.com/s/files/1/0439/9484/1246/files/zomazefeluwilaf.pdf
    • https://cdn.shopify.com/s/files/1/0432/1034/2559/files/44177284068.pdf
    • https://cdn.shopify.com/s/files/1/0439/8202/8958/files/rexete.pdf
    • https://cdn.shopify.com/s/files/1/0431/1502/0448/files/95789121253.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/87294954422.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87678197609.pdf
    • https://cdn.shopify.com/s/files/1/0440/5942/6968/files/anakin_midichlorian_count.pdf
    • https://cdn.shopify.com/s/files/1/0438/9139/2664/files/in_search_of_lost_time_book.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005779.bin
97cc1e27c8680cced2712f2b2cf494f5c8c53d32a5fb4f3351146608d3deeda7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5779 5596 bytes
font_01_sfnt_off00006a9d.bin
a65aab05d8128da246a1cc0d9e00ad2639dc83cf1a77705f40d56015699c9313		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A9D 10324 bytes

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