Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3231e4554b95893…

MALICIOUS

PDF

45.1 KB Created: 2020-08-21 11:48:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 164839219e27de7258c2e1a9b02c0308 SHA-1: 7962aede0056a8ee0ecd067fcda9f2a57caae10a SHA-256: e3231e4554b958931918b6175f2c6e69c6c66651c8fb17e3381babf102ac190e
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/pify?keyword=sathi+bengali+movie+free++in+hd`. This indicates the document is designed to trick users into visiting a malicious site, likely for phishing or malware distribution. The presence of a large number of external PDF links further supports the malicious intent, suggesting a link farm or redirection strategy.

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=sathi+bengali+movie+free++in+hd
    • http://doginax.tessalationbook.com/uploads/1/3/0/7/130739919/pofoxifujuwi.pdf
    • http://files.milkywayfarm.net/uploads/1/3/0/9/130969825/9205158.pdf
    • http://kenek.christierecords.in/uploads/1/3/0/8/130874368/zobani_zemilo_linalogusiduses_bixomesi.pdf
    • http://mupad.hawartawfiq.com/uploads/1/3/2/7/132740285/680632.pdf
    • http://files.balasanabodywork.com/uploads/1/3/0/7/130776484/votifaxo-pebejab-vosotuta-lamiwepesitumin.pdf
    • https://cdn.shopify.com/s/files/1/0432/5467/7662/files/huba_control_604_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0436/2679/1075/files/aligarh_muslim_university_history.pdf
    • https://cdn.shopify.com/s/files/1/0432/9983/1968/files/fekiregisonukobev.pdf
    • https://cdn.shopify.com/s/files/1/0434/7445/2632/files/tidozajirusebev.pdf
    • https://cdn.shopify.com/s/files/1/0435/5240/7704/files/st_catherines_school_uniform.pdf
    • https://cdn.shopify.com/s/files/1/0431/7547/7416/files/93416538245.pdf
    • https://cdn.shopify.com/s/files/1/0433/7578/8184/files/funeral_service_template_uk.pdf
    • https://cdn.shopify.com/s/files/1/0435/1537/9880/files/vugubadovevedululabi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4375/7992/files/tawaxukidewuvuvilelada.pdf
    • https://cdn.shopify.com/s/files/1/0431/1551/1964/files/topupuzudizavomunowem.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c40.bin
378613bc3e5ccc41f81bc842a69d335db8318584183d51c7e39f558826e3aa87		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C40 5448 bytes
font_01_sfnt_off00006e9b.bin
fc4d09376ca163cddbac1a89467c45c6d2b01c28b3addfdc02aeadc0fea50552		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E9B 10336 bytes
font_02_sfnt_off00009228.bin
c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9228 16164 bytes

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