Malicious PDF — malware analysis report

Static analysis result for SHA-256 69bab0fee5e22cc5…

MALICIOUS

PDF

35.7 KB Created: 2020-08-14 23:00:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e84909a71579756c70823b3584f0487d SHA-1: e0c0f89afa4b3f8f6e1f3b97ce1e0888c9247c6e SHA-256: 69bab0fee5e22cc51e23def9ce82fcdd5d659da3f5e77e25e5900f8b67d8097b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple external links, including one identified as a known malicious redirector. The document body text mentions 'Comcast email not sending android', suggesting a lure to trick users into clicking the malicious link. The presence of numerous PDF links and a redirector indicates an attempt to distribute further malicious content or phish credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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=comcast+email+not+sending+android
    • http://gatixajo.northwestclarefamilyresourcecentre.com/uploads/1/3/1/4/131453540/6e03c641.pdf
    • http://files.nykpart.com/uploads/1/3/0/7/130738534/jebafelom_resazoluzej_wobadadifewek_dejomilarafag.pdf
    • http://files.prettycardsandmore.com/uploads/1/3/0/9/130969206/niridonajawom.pdf
    • http://sodowode.rhinoultimate.com/uploads/1/3/2/7/132740880/609578.pdf
    • http://files.kootenaydoulagroup.com/uploads/1/3/1/4/131409128/5f50831.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/7122/5494/files/kejixudixoxaverir.pdf
    • https://cdn.shopify.com/s/files/1/0433/3699/0885/files/30922045165.pdf
    • https://cdn.shopify.com/s/files/1/0435/6869/3407/files/18414499959.pdf
    • https://cdn.shopify.com/s/files/1/0432/0228/1633/files/9078012628.pdf
    • https://cdn.shopify.com/s/files/1/0434/1052/2277/files/nunososipij.pdf
    • https://cdn.shopify.com/s/files/1/0437/5887/8872/files/wajonis.pdf
    • https://cdn.shopify.com/s/files/1/0431/4336/4759/files/narolewer.pdf
    • https://cdn.shopify.com/s/files/1/0427/9664/6556/files/ateroma_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0427/5326/1724/files/wenolosuxelusa.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005019.bin
cd8e93841e878780b7109922725bb8e5ccd1d6f7af0780a0c4a02f5472676321		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5019 5164 bytes
font_01_sfnt_off0000617f.bin
7be9334aa045ecd8825486926a0b39ec743a2497757318b184681f3dd16ee80e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x617F 9532 bytes

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