Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f4001f5d74af7a7…

MALICIOUS

PDF

43.2 KB Created: 2020-08-18 20:15:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 480c63abc51b5478effefdc2c86c6070 SHA-1: dafea513613ea3172137d904d2e07e7ced53daca SHA-256: 5f4001f5d74af7a75291324fbc08d05280d3ba87c14397d89e85b104924224a9
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, including a critical redirector link to "ttraff.com", disguised as a drug testing form. The presence of a large number of external PDF links suggests a link farm or SEO poisoning attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a malicious intent to redirect users to potentially harmful content.

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=reasonable+suspicion+drug+testing+form
    • http://xitarev.welchesterwellness.com/uploads/1/3/0/7/130740189/refotigik.pdf
    • http://files.bowenpeters.com/uploads/1/3/0/7/130775649/watogawovisej.pdf
    • http://files.biglifecc.com/uploads/1/3/1/3/131398541/todak_fazogimowa_lumulotirigata.pdf
    • http://files.keepsaladobeautiful.com/uploads/1/3/0/8/130814208/zodovati.pdf
    • http://garigem.vivacebu.com/uploads/1/3/0/7/130740257/buwezitatifiw-kurovejoduniru-xijuzira.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/9050/2051/files/gekulerozunekunojotediw.pdf
    • https://cdn.shopify.com/s/files/1/0435/0243/6518/files/5923167023.pdf
    • https://cdn.shopify.com/s/files/1/0434/7808/9878/files/2406921709.pdf
    • https://cdn.shopify.com/s/files/1/0432/5064/7202/files/gipujelaparufuvijizukoxe.pdf
    • https://cdn.shopify.com/s/files/1/0431/6987/4082/files/john_deere_lx178_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0447/8972/7381/files/blockbuster_telugu_song_320kbps.pdf
    • https://cdn.shopify.com/s/files/1/0440/6837/2632/files/92439041379.pdf
    • https://cdn.shopify.com/s/files/1/0435/3864/5151/files/beauty_and_the_beast_watch_online.pdf
    • https://cdn.shopify.com/s/files/1/0435/5689/6927/files/xubatete.pdf
    • https://cdn.shopify.com/s/files/1/0432/0015/1707/files/normas_apa_2020_bibliografia.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xidab.pdf
    • https://cdn.shopify.com/s/files/1/0432/6594/9862/files/26049233703.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a33.bin
d509c26e12bfd78e9cb371cf2700442ba7ad9291c34837f955a531164a5682ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A33 5620 bytes
font_01_sfnt_off00007d32.bin
fe6087755941ebbb63989f37447eab52f3f399cb11ca7141da372ea58094996a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D32 10104 bytes

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