Malicious PDF — malware analysis report

Static analysis result for SHA-256 0997efd68e9870c0…

MALICIOUS

PDF

45.6 KB Created: 2020-08-18 21:21:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b89e5295f5cefe3ecb6b32ea7d30f8ca SHA-1: b845d14d698d299f39015e811882f83d8dbfa79b SHA-256: 0997efd68e9870c0d36fa309836653933655b2a043579f223749cce65cce52fa
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, also contains URLs pointing to external resources. This suggests the primary goal is to redirect the user to malicious sites, potentially for phishing or malware distribution.

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=bengali+language+movie+songs
    • http://files.eiotown.com/uploads/1/3/0/7/130738614/wivatafi-nidawuvawe-sikunazudipapi.pdf
    • http://larur.nanotools.us/uploads/1/3/0/7/130739069/ac001a449375fd0.pdf
    • http://files.asterasresidenceproject.com/uploads/1/3/0/7/130738764/mozemog_dufefarawuwon_fuvurozugigoga.pdf
    • http://zuror.prestonsweeps.co.uk/uploads/1/3/0/7/130775448/puxuwal.pdf
    • http://luwak.tartineneworleans.com/uploads/1/3/1/3/131379362/terapi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0440/5110/3894/files/lipejarutomojarebubidime.pdf
    • https://cdn.shopify.com/s/files/1/0435/2350/6336/files/adaptability_definition.pdf
    • https://cdn.shopify.com/s/files/1/0431/2468/7014/files/anet_a8_firmware.pdf
    • https://cdn.shopify.com/s/files/1/0434/4430/6086/files/convert_epub_to_calibre.pdf
    • https://cdn.shopify.com/s/files/1/0430/6635/9962/files/morubeduwidumasuvob.pdf
    • https://cdn.shopify.com/s/files/1/0437/6546/5249/files/63613077627.pdf
    • https://cdn.shopify.com/s/files/1/0438/4771/2928/files/55493463897.pdf
    • https://cdn.shopify.com/s/files/1/0427/9389/4044/files/55216036675.pdf
    • https://cdn.shopify.com/s/files/1/0430/2215/5930/files/video_converter_ultimate_pour_android.pdf
    • https://cdn.shopify.com/s/files/1/0432/3124/8541/files/72848509339.pdf
    • https://cdn.shopify.com/s/files/1/0432/7456/7843/files/52319048402.pdf
    • https://cdn.shopify.com/s/files/1/0431/5247/4280/files/sajezixow.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNU
    • http://www.gnu.org/copyleft/gpl.htmRegular

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006157.bin
bf8e1bee25769cb126839b00c64809effea8c59dba3df963c30cf162b955b25c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6157 5020 bytes
font_01_sfnt_off0000725d.bin
bd696e3928d7d52f710aaff6f8fc9a0e2381483f3de8b38e6ed1c16284613f00		 pdf-font-stream PDF embedded font (sfnt) at offset 0x725D 6236 bytes
font_02_sfnt_off000086ac.bin
307e9cc4c19a2eda7449e97f00fb70fc4948ec843e53e4cc257f064c8f1009d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86AC 10064 bytes

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