Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6dc986c9cd076eb…

MALICIOUS

PDF

40.6 KB Created: 2020-08-06 03:34:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1d821f5183aaf7f369a2c049dd7b6be7 SHA-1: 20f076ba3deffbc59512b19a54265156ea914cc0 SHA-256: e6dc986c9cd076eb0a674cb4ab11292ce892d7e47fa13d3fd3de61956d390574
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, many of which point to a link farm hosted on Shopify. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=berichtsheft+vorlage+praktikum+pdf'. The document body, though heavily obfuscated, contains this same URL, suggesting the primary intent is to redirect the user to malicious content. No scripts were extracted from this sample.

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=berichtsheft+vorlage+praktikum+pdf
    • http://files.encorect.org/uploads/1/3/0/9/130968961/podoxelosa.pdf
    • http://zirinoze.kaitlinhennessyart.com/uploads/1/3/2/6/132695569/654871.pdf
    • http://files.grcrowfamily.com/uploads/1/3/1/0/131070190/3426f7e.pdf
    • https://cdn.shopify.com/s/files/1/0436/7620/5209/files/2711951532.pdf
    • https://cdn.shopify.com/s/files/1/0434/2949/4936/files/zirurifigesalugepole.pdf
    • https://cdn.shopify.com/s/files/1/0427/5752/1574/files/negapiluwojowinoxosojali.pdf
    • https://cdn.shopify.com/s/files/1/0429/7300/3935/files/82079292980.pdf
    • https://cdn.shopify.com/s/files/1/0437/0730/2037/files/viva_la_vidamp3.pdf
    • https://cdn.shopify.com/s/files/1/0432/6237/8152/files/numokelonabanuzofiz.pdf
    • https://cdn.shopify.com/s/files/1/0432/4609/2443/files/71202696673.pdf
    • https://cdn.shopify.com/s/files/1/0440/6575/1192/files/rodemevibonoda.pdf
    • https://cdn.shopify.com/s/files/1/0430/0177/4233/files/nfl_vlc_stream.pdf
    • https://cdn.shopify.com/s/files/1/0433/5616/0151/files/32089037503.pdf
    • https://cdn.shopify.com/s/files/1/0429/9322/1783/files/rugomuwogab.pdf
    • https://cdn.shopify.com/s/files/1/0431/7881/9748/files/montana_300_try_me_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/2191/0687/files/java_code_conventions.pdf
    • https://cdn.shopify.com/s/files/1/0435/6653/0728/files/xubepupozebodunadomuti.pdf
    • https://cdn.shopify.com/s/files/1/0433/1782/1605/files/64073212774.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_off00005dd2.bin
862af33362a74aa81314b65f6cbf44d3fca08aca228e15b9030da4e37babbc95		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DD2 5740 bytes
font_01_sfnt_off0000714b.bin
cc3e46f00be14736595c9e5e36f84244a098b1914662c24ad9845986ef77b969		 pdf-font-stream PDF embedded font (sfnt) at offset 0x714B 10928 bytes

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