Malicious PDF — malware analysis report

Static analysis result for SHA-256 babe565206c635ea…

MALICIOUS

PDF

54.9 KB Created: 2020-08-01 08:24:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e3aae3236c1485054d7cfdfb106f0d08 SHA-1: c58e9604c01d510b4e85aecaef0aa3b8f81e5149 SHA-256: babe565206c635eaf8c324bd9f0193bb182fa216ef4c0f898e307c44c7fe22f5
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a large number of embedded links, with one heuristic specifically identifying a malicious redirector. The ML classifier also strongly indicated maliciousness. The primary malicious IOC is the redirector URL, which likely leads to a phishing or malware delivery page. The document body contains obfuscated text and URLs, further supporting a malicious intent.

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/pify?keyword=mac+kill+process
    • http://files.justbinnovative.com/uploads/1/3/2/6/132682974/zarewefuj-lowavob.pdf
    • http://files.robertlryan.com/uploads/1/3/0/7/130776204/dugevesosulikinasemi.pdf
    • http://files.devinelydesignedproducts.com/uploads/1/3/0/8/130814172/32913c.pdf
    • http://files.ncmaf.net/uploads/1/3/1/4/131408415/fevoluro.pdf
    • http://files.camponeway.org/uploads/1/3/2/7/132712235/tivodoneno-gezoroke-banazinodapolo-likowifojuxe.pdf
    • https://cdn.shopify.com/s/files/1/0438/8978/7048/files/ragadatafuzukix.pdf
    • https://cdn.shopify.com/s/files/1/0430/8451/3440/files/71085222942.pdf
    • https://cdn.shopify.com/s/files/1/0430/4217/7181/files/sikazoxoziruvolujumofogip.pdf
    • https://cdn.shopify.com/s/files/1/0428/8082/7558/files/88983682177.pdf
    • https://cdn.shopify.com/s/files/1/0431/3156/8277/files/zimawapobisabazadavezira.pdf
    • https://cdn.shopify.com/s/files/1/0435/2638/9912/files/rusilivuri.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mujunevuduw.pdf
    • https://cdn.shopify.com/s/files/1/0431/5820/8674/files/gifob.pdf
    • https://cdn.shopify.com/s/files/1/0435/7675/4344/files/56517222133.pdf
    • https://cdn.shopify.com/s/files/1/0435/3851/4071/files/unglued_book.pdf
    • https://cdn.shopify.com/s/files/1/0434/1838/6588/files/xogiruwudorefid.pdf
    • https://cdn.shopify.com/s/files/1/0437/6294/2113/files/17121500598.pdf
    • https://cdn.shopify.com/s/files/1/0429/7628/0729/files/wakinusazeregov.pdf
    • https://cdn.shopify.com/s/files/1/0433/4885/2904/files/what_is_hardware_acceleration_chrome.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_off00007cd9.bin
0e87cd05f332aeb2a72b3daf131c0310eff8a4a40b86507956a7cca2f5d1d305		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CD9 6168 bytes
font_01_sfnt_off00008c7b.bin
f6260048bffb9bedd4ea16c9b56db8cfa811389817dfb1184303ddd344605240		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C7B 4596 bytes
font_02_sfnt_off00009c1b.bin
c4cfadb7ce8875eda47d56be54962f3634d4755fb093b980545db25aa1c8ec11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C1B 10480 bytes
font_03_sfnt_off0000bffc.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBFFC 4324 bytes

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