Malicious PDF — malware analysis report

Static analysis result for SHA-256 e29fdcd1c86392ca…

MALICIOUS

PDF

57.3 KB Created: 2020-07-14 00:54:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2235cf1efdd9175415b42382545ccddf SHA-1: 67c1925b0a5c9c5723c0871c3e0bc198ea800bba SHA-256: e29fdcd1c86392cae8badd8977fb2cb2a634a909d23306b88cd635de8b327a45
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a significant number of embedded URLs, with a critical heuristic firing for a malicious redirector link to 'ttraff.com'. Another critical heuristic indicates a PDF link farm, with many links pointing to Shopify domains. The ML classifier strongly suggests maliciousness. The document body is heavily obfuscated and appears to be junk data, but the presence of numerous external links points towards a malicious SEO or redirection scheme.

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/wb?keyword=belajar%20action%20script%203%20pdf
    • http://files.pineridgereconciliationcenter.org/uploads/1/3/0/7/130739688/84b65ab5e2e1.pdf
    • http://files.coachandpresident.com/uploads/1/3/0/8/130874539/3f73253.pdf
    • http://files.nalinikrishnankutty.com/uploads/1/3/0/8/130874128/mewajuluxojuvafox.pdf
    • http://files.nalinikrishnankutty.com/uploads/1/3/0/8/130874128/mewajuluxoju
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51994241049.pdf
    • https://cdn.shopify.com/s/files/1/0433/0441/9478/files/81337892974.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sasexenumufuxa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dokole.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/ditogefudojamo.pdf
    • https://zekipanepu.files.wordpress.com/2020/06/kedadobafekuzibuneganixu.pdf
    • https://xorewesepo.files.wordpress.com/2020/07/89982452173.pdf
    • https://divinadolipu.files.wordpress.com/2020/07/nipepulefisen.pdf
    • https://cdn.shopify.com/s/files/1/0427/8976/5279/files/94969949547.pdf
    • https://cdn.shopify.com/s/files/1/0431/4379/0760/files/vimar.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90840236881.pdf
    • https://cdn.shopify.com/s/files/1/0428/0995/0367/files/26285839902.pdf
    • https://cdn.shopify.com/s/files/1/0431/2917/6232/files/tirodefolibewegomitu.pdf
    • https://cdn.shopify.com/s/files/1/0430/6596/6754/files/lebop.pdf
    • https://cdn.shopify.com/s/files/1/0431/6200/9755/files/relalefepez.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89709194360.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53446206952.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009b13.bin
507ed33398796d7d40ae9ea4ac56111ec6346eaae6a7775dffd6f3f3f635ce84		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B13 5228 bytes
font_01_sfnt_off0000acdb.bin
3871703a900ee51321e93a96365dcb3ebbc3f677c3bdacf3c26793d75b4b5116		 pdf-font-stream PDF embedded font (sfnt) at offset 0xACDB 13792 bytes

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