Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ccaeb7ba7102448…

MALICIOUS

PDF

40.2 KB Created: 2020-07-12 04:18:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cfc682f8874f84c18a93b949e1c3bdbb SHA-1: 97cb9e9da36c412b687225fb74b6e34ec7ae1997 SHA-256: 7ccaeb7ba71024483fdbfff3c2f028e5829b4c9ee160cdd8bcdd5bbfb6f82076
152 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, https://ttraff.com/pify?keyword=douchebag+workout+1+unblocked, is flagged as a malicious redirector. The document also exhibits characteristics of a link farm, with numerous links to external PDFs hosted on various platforms. This suggests a campaign to lure users to malicious sites, likely for phishing or malware distribution.

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=douchebag+workout+1+unblocked
    • http://files.mission1040.com/uploads/1/3/1/4/131438432/jutatoboxozajolebeg.pdf
    • http://files.abbi.ca/uploads/1/3/2/8/132815388/ec4634d5fb6857c.pdf
    • http://files.agdersymfoniorkester.com/uploads/1/3/0/9/130969874/e1fd89d.pdf
    • http://files.capitalareaanesthesia.com/uploads/1/3/0/9/130969992/midab-zubuzubunebukev-tamij.pdf
    • https://derelag379661146.files.wordpress.com/2020/07/24994966560.pdf
    • https://mozovubebu.files.wordpress.com/2020/06/12996936449.pdf
    • https://xomexanuk.files.wordpress.com/2020/06/fesosewowekuwoxidasu.pdf
    • https://nitapid.files.wordpress.com/2020/06/13406887887.pdf
    • https://fejikix.files.wordpress.com/2020/06/resugedizamamur.pdf
    • https://pobobuw696722142.files.wordpress.com/2020/07/wukonunuremeruman.pdf
    • https://togapona.files.wordpress.com/2020/07/67650561246.pdf
    • https://jupeveni.files.wordpress.com/2020/06/bovarasonisopi.pdf
    • https://kupazezez.files.wordpress.com/2020/07/piwelud.pdf
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/2092618451.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/biludetejuvujatolometa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fulefevizurosojasi.pdf
    • https://cdn.shopify.com/s/files/1/0432/9432/6949/files/37460160368.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/loxutiwijadewafulon.pdf
    • https://cdn.shopify.com/s/files/1/0431/8127/7342/files/11544048985.pdf
    • https://cdn.shopify.com/s/files/1/0427/5961/8716/files/xanozesexoxagara.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_off00005f5a.bin
6e0614ba0d96dbb9a774ed941172f3b7e4ac2b002885a10d3d876c3149b7e4c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F5A 5204 bytes
font_01_sfnt_off0000711b.bin
2e41770369ca1d88d21aec8c12227714380d8ad1a1afde075ecddaecee2be8bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x711B 10196 bytes

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