Malicious PDF — malware analysis report

Static analysis result for SHA-256 0904d948c030094a…

MALICIOUS

PDF

36.3 KB Created: 2020-08-25 18:33:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1d4d56673252ec4e4574e23d856b2ffc SHA-1: 0733f4777b95d1283016e37003e88d1e7ba20743 SHA-256: 0904d948c030094a7e11664e49e5a56d271241f151adf1caffee3f5deae203bd
162 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. The presence of a 'download button' lure and a large number of external PDF links further supports a malicious intent, likely to redirect users to malicious content or phishing sites. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=losing+my+mind+sondheim+sheet+music
    • http://files.aidanniles.com/uploads/1/3/0/8/130814003/xonovepe-mubamikuzijoreb.pdf
    • http://sulik.davidbuswell.com/uploads/1/3/1/0/131071164/xanewaw-mivoxipefapot-fiwatonilakofi.pdf
    • http://files.joekimgroup.com/uploads/1/3/2/7/132710779/46c782f678b43.pdf
    • http://topog.boostfitness.co.uk/uploads/1/3/1/4/131406798/xereladatutifuvixaf.pdf
    • http://nitudalop.publicarchives.info/uploads/1/3/1/0/131070317/4546360.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0449/4888/1567/files/diagnostico_de_anemia_por_deficiencia_de_hierro.pdf
    • https://cdn.shopify.com/s/files/1/0435/5561/8977/files/3956484875.pdf
    • https://cdn.shopify.com/s/files/1/0464/7606/6966/files/classic_wow_warlock_guide_pve.pdf
    • https://cdn.shopify.com/s/files/1/0437/0356/6486/files/33216156687.pdf
    • https://cdn.shopify.com/s/files/1/0435/5106/4228/files/bitevepasigu.pdf
    • https://cdn.shopify.com/s/files/1/0433/5812/6245/files/2020_drone_buyer_s_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/6563/8050/files/accounting_principles_13th_edition_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kepikopu.pdf
    • https://cdn.shopify.com/s/files/1/0430/9866/9220/files/gaxinesotureniserorabox.pdf
    • https://cdn.shopify.com/s/files/1/0430/8090/8949/files/meninabelug.pdf
    • https://cdn.shopify.com/s/files/1/0430/4578/1665/files/verenikodep.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_off00004fc2.bin
52a644d500716c94edc1b9c599864488231ea4a97b6c272b8aaa62818f3a82d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4FC2 5056 bytes
font_01_sfnt_off000060d4.bin
9dfc91fa2b95168809fd9a0b3735c6a3f22418779b25a15f4f271f4e5df873eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60D4 10396 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.