Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cc02603697b601b…

MALICIOUS

PDF

49.5 KB Created: 2020-08-03 12:38:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 14e6ee10a029e8d80d2bd057ca1a5aab SHA-1: 867a4730fe062ad7d84a039265c60f8bf98460cd SHA-256: 7cc02603697b601bbb2fa7eed83e2b997e26cb3d468d33fe5c6af1c1d9b7780a
152 Risk Score

Malware Insights

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

The PDF file was identified as malicious by a machine learning classifier and contains numerous embedded links. One critical heuristic indicates the PDF links to known malicious redirector infrastructure, specifically 'https://ttraff.ru/pify?keyword=programa+aprendizajes+clave+quinto+grado+pdf'. Another critical heuristic flagged it as a PDF link farm, with many links pointing to external PDF files hosted on domains like cdn.shopify.com and various other file-hosting sites. The document body, though heavily obfuscated, also contains some of these URLs. The primary attack pattern appears to be the distribution of malicious content or redirection through a large number of embedded links within the PDF.

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.ru/pify?keyword=programa+aprendizajes+clave+quinto+grado+pdf
    • http://files.supportwestpotomac.com/uploads/1/3/0/9/130969772/f57eb6fa2a.pdf
    • http://files.alt-lifecoach.com/uploads/1/3/1/3/131382387/jabutafogijomada.pdf
    • http://files.stonegatefl.com/uploads/1/3/1/4/131437615/3965879.pdf
    • http://files.emmashugs.com/uploads/1/3/2/6/132683260/tusidukeruwom.pdf
    • http://files.lionhearttalent.com/uploads/1/3/1/1/131164236/1662856.pdf
    • https://cdn.shopify.com/s/files/1/0430/7995/8679/files/74729840722.pdf
    • https://cdn.shopify.com/s/files/1/0434/2113/9096/files/71751497236.pdf
    • https://cdn.shopify.com/s/files/1/0431/0011/1009/files/61860181707.pdf
    • https://cdn.shopify.com/s/files/1/0432/1912/4382/files/91868946153.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fakuwonilojovaxibudebu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90685913575.pdf
    • https://cdn.shopify.com/s/files/1/0430/6678/5949/files/zevukagosozufidodoj.pdf
    • https://cdn.shopify.com/s/files/1/0433/3050/2806/files/47097325284.pdf
    • https://cdn.shopify.com/s/files/1/0438/0835/8561/files/air_optix_rebate.pdf
    • https://cdn.shopify.com/s/files/1/0436/2564/4192/files/wedituvugifi.pdf
    • https://cdn.shopify.com/s/files/1/0429/6015/8873/files/98941154224.pdf
    • https://cdn.shopify.com/s/files/1/0433/7221/6483/files/mabebowive.pdf
    • https://cdn.shopify.com/s/files/1/0427/7963/9967/files/7872541953.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006369.bin
0eac1552a6a0cc8d6d43e14f5c157d052ff2bf21460314f67a2c213e0a454e63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6369 6744 bytes
font_01_sfnt_off00007450.bin
1ea978b3f18654ac156364d133c17d9d13d66bd9423b387885a47a249abcf21b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7450 5788 bytes
font_02_sfnt_off000087fa.bin
2b17894289ef4ac549ca5ccbfe538e6ebde94701791c0542cba9a71f2d67f349		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87FA 2268 bytes
font_03_sfnt_off0000920d.bin
4ff13a41b3d04ab4ced6e89d8a74a2fb3e76693024a6fefdba1b10ad7d84d29f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x920D 11172 bytes

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