Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee19946134d6ceca…

MALICIOUS

PDF

51.7 KB Created: 2020-08-27 22:33:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0be3e31db415083dfd66a99b24742efc SHA-1: 32f1ad46a52d5adafbb4febeedb3878ea9990899 SHA-256: ee19946134d6ceca867a85885b0a8ddf298c80d88f14207f7908697759fff623
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.cc) known for malicious activity. The document body, though heavily obfuscated, contains text related to product reviews and URLs that appear to be part of a link farm designed to manipulate search engine results. The ML classifier strongly supports the malicious nature of this 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.cc/pify?keyword=netgear+nighthawk+x6s+ac3000+review
    • http://files.latin-numbers.com/uploads/1/3/1/0/131070051/03e5ed4.pdf
    • http://files.albionreunionday.com/uploads/1/3/1/6/131606289/8176681.pdf
    • http://pijamasa.predictingfuturebricks.com/uploads/1/3/0/8/130874493/limidadok.pdf
    • http://detezoko.newwritersworld.org/uploads/1/3/0/7/130776078/91fb1.pdf
    • https://cdn.shopify.com/s/files/1/0434/1995/9463/files/woketonofibodumod.pdf
    • https://cdn.shopify.com/s/files/1/0431/8570/1019/files/advanced_excel_vba.pdf
    • https://cdn.shopify.com/s/files/1/0435/8176/7841/files/hepatic_encephalopathy.pdf
    • https://cdn.shopify.com/s/files/1/0428/3901/5580/files/77912040700.pdf
    • https://cdn.shopify.com/s/files/1/0431/5014/7745/files/28554128956.pdf
    • https://cdn.shopify.com/s/files/1/0433/4940/9960/files/banajusikexuguxapuji.pdf
    • https://cdn.shopify.com/s/files/1/0429/7015/3113/files/aldrich_regular_font.pdf
    • https://cdn.shopify.com/s/files/1/0427/7154/6279/files/11639250620.pdf
    • https://cdn.shopify.com/s/files/1/0436/1791/0944/files/80819990641.pdf
    • https://cdn.shopify.com/s/files/1/0431/0892/5600/files/badibibedolawe.pdf
    • https://cdn.shopify.com/s/files/1/0433/7546/0515/files/treatment_of_hypertension_in_chronic_kidney_disease.pdf
    • https://cdn.shopify.com/s/files/1/0434/4564/9574/files/46461300294.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_off00007d50.bin
975033baf148d9693e5dfd0a64d5401a39c34b0ec540d744e42708c9690d4729		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D50 5420 bytes
font_01_sfnt_off00008fc7.bin
d658c941196a08d0664a819a33fbb3a0441eae1b68c62ba8b6157eeed24a7d3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FC7 10400 bytes
font_02_sfnt_off0000b366.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB366 4324 bytes

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