Malicious PDF — malware analysis report

Static analysis result for SHA-256 26879554b65270ed…

MALICIOUS

PDF

63.8 KB Created: 2020-08-08 10:47:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 34ba052d262c72b232e9a94e4dee9219 SHA-1: 01d81ac670cbf215f910853c82cea85edf2573e4 SHA-256: 26879554b65270ed6a9d970edfaffe5975b2d8358ca8f1802b50c524254437d8
152 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. It also contains a large number of external PDF links, suggesting a link farm. The primary malicious URL identified is https://ttraff.cc/pify?keyword=peta+bulatan+pdf, which likely serves as a gateway to further malicious content. The document body itself is heavily obfuscated and contains embedded URLs, reinforcing the malicious intent.

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=peta+bulatan+pdf
    • http://files.simoncdrew.com/uploads/1/3/1/4/131453969/masuvebekat_konatut_susakesig_bolijuxeniv.pdf
    • http://files.sakuramassagesantafe.com/uploads/1/3/2/3/132302970/70844.pdf
    • http://zapunofa.thomasdouglas.fr/uploads/1/3/1/8/131857631/7093878.pdf
    • http://files.thosjazz.com/uploads/1/3/2/6/132681452/1454941.pdf
    • http://zasifer.globalconcreteroses.com/uploads/1/3/0/7/130775219/bowipixukav.pdf
    • https://cdn.shopify.com/s/files/1/0435/7318/2625/files/38763456590.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2753/files/winumijifoposuwifelexad.pdf
    • https://cdn.shopify.com/s/files/1/0438/4364/9698/files/ganerawimifowiwosavaz.pdf
    • https://cdn.shopify.com/s/files/1/0427/4618/3847/files/pujifusatixakewegigobib.pdf
    • https://cdn.shopify.com/s/files/1/0429/7503/5541/files/pofonedanopez.pdf
    • https://cdn.shopify.com/s/files/1/0433/4449/4760/files/38924127768.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0486/files/fidujuxutiluxu.pdf
    • https://cdn.shopify.com/s/files/1/0435/0751/5558/files/92660952799.pdf
    • https://cdn.shopify.com/s/files/1/0432/1270/1854/files/liwewituxibafukotevaretan.pdf
    • https://cdn.shopify.com/s/files/1/0430/4837/0333/files/xagokizuza.pdf
    • https://cdn.shopify.com/s/files/1/0430/0200/3619/files/84081233279.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 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000052d1.bin
5c96381b2956ba85bdc606e02b4bc67750563a6a571ffb0d67253edb336a5a64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52D1 6476 bytes
font_01_sfnt_off000062a6.bin
cb9f25e7e7850336f222adda83b01498d20d1a8a378a4c545661477e20acf03d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62A6 3088 bytes
font_02_sfnt_off00006d97.bin
ac6dd563b9c4f0343ee4bd089826ab13d156e24ddb2eb61e02b2eaf43497ee9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D97 4904 bytes
font_03_sfnt_off00007e51.bin
78bfc0de061e9c86fbf6fd9ff4d98fc2d4ffbc0da8c484ae968d9441a74842f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E51 21012 bytes
font_04_sfnt_off0000b568.bin
d33e234e0cfb1fa10b5b8b666200c31ea05ce5be00a9b8eeb9ddcb714c05f16d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB568 10560 bytes
font_05_sfnt_off0000d9b2.bin
3d3093e306480771b47b0b2f3b211ac94547a9ceac40a89eaccef70ae408adf8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD9B2 16716 bytes

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