Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd3290e55c1c4c1b…

MALICIOUS

PDF

54.0 KB Created: 2020-08-26 13:56:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3712bfd450bd33594018f503eb4a6908 SHA-1: e0b881b921441d88b144419ccd8e5748b203cbaf SHA-256: cd3290e55c1c4c1bad490a20e8ad3a9753aa3330ff87c63a3f5bf1f484f6819e
152 Risk Score

Malware Insights

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

The PDF was flagged by a critical heuristic for linking to known malicious redirector infrastructure. Additionally, it contains a link farm pointing to numerous external PDFs, a common technique for SEO poisoning or distributing malicious content. The embedded URL 'https://ttraff.club/pify?keyword=codigos+gta+san+andreas+xbox+360+fol' is the primary indicator of malicious intent, likely serving as a lure or initial stage for further compromise.

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.club/pify?keyword=codigos+gta+san+andreas+xbox+360+fol
    • http://files.buffconsultingclub.com/uploads/1/3/0/9/130969895/tuxurivekozidutu.pdf
    • http://files.theoldsilkfarm.com/uploads/1/3/1/6/131606822/nijonowotijowugi.pdf
    • http://files.stpeterscatholicschool.com/uploads/1/3/0/7/130740260/32bbc4eb68680.pdf
    • https://cdn.shopify.com/s/files/1/0435/9412/1379/files/raxizamasazasexipuse.pdf
    • https://cdn.shopify.com/s/files/1/0433/5733/9803/files/pdf_50_sombras_mas_oscuras.pdf
    • https://cdn.shopify.com/s/files/1/0432/6011/7160/files/minutarotezopififedove.pdf
    • https://cdn.shopify.com/s/files/1/0450/5380/4694/files/cancer_de_pancreas_medigraphic.pdf
    • https://cdn.shopify.com/s/files/1/0433/3626/9983/files/popatebaxikasidi.pdf
    • https://cdn.shopify.com/s/files/1/0432/1571/6516/files/relowebajomopipogases.pdf
    • https://cdn.shopify.com/s/files/1/0432/2269/6098/files/aetna_life_insurance_claim_form.pdf
    • https://cdn.shopify.com/s/files/1/0431/6318/9412/files/unity_render_texture.pdf
    • https://cdn.shopify.com/s/files/1/0430/7386/3842/files/mijirilotakefigivatunafo.pdf
    • https://cdn.shopify.com/s/files/1/0441/0382/7608/files/79268585328.pdf
    • https://cdn.shopify.com/s/files/1/0436/9596/4328/files/xirudenuraxu.pdf
    • https://cdn.shopify.com/s/files/1/0428/3033/2070/files/40577678449.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_off000076c3.bin
eabd53b3866533d1ca4f5906f7c5718bde00b023a7eccf0c4c061029a56e8626		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76C3 5556 bytes
font_01_sfnt_off000089b8.bin
6096f7663d0b66cb8c016ccee069df82d686c95688d499f43c39bf4173629270		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89B8 16300 bytes
font_02_sfnt_off0000ba81.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBA81 4324 bytes

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