Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7ebc840bb619e9b…

MALICIOUS

PDF

37.4 KB Created: 2020-08-13 22:51:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f3694df2b3533df8c9212de54e951291 SHA-1: a86243cfba6cd9db03c83c5b72c9a888cf55fa81 SHA-256: f7ebc840bb619e9becaab8871c2275aa02216d9d8b8ad887eb2451c4cea38ba2
152 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is https://ttraff.com/pify?keyword=ikea+malaysia+catalogue+2019+pdf, which is likely used to obscure the true destination of the attack. While many other URLs point to benign Shopify domains, the presence of the redirector and the ML classifier's high confidence score suggest a malicious intent, possibly 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=ikea+malaysia+catalogue+2019+pdf
    • http://files.seems.com/uploads/1/3/1/4/131455283/jitameboj_zejajegenib_gafoxilo.pdf
    • http://files.southslopepediatrics.com/uploads/1/3/0/9/130969791/f8ef85fe.pdf
    • http://pakuk.stmaryssilverstream.org/uploads/1/3/1/8/131871674/lamuxakofov-nopetuwu-zaxojinulolo-zifitadipiluvi.pdf
    • http://mopusemu.enfesnefes.com/uploads/1/3/1/6/131637136/5699256.pdf
    • http://files.foodloveblog.com/uploads/1/3/1/3/131380868/vosirijofa.pdf
    • https://cdn.shopify.com/s/files/1/0427/6020/8540/files/uniden_6._0_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jidaxuno.pdf
    • https://cdn.shopify.com/s/files/1/0431/2625/9876/files/screen_new_window.pdf
    • https://cdn.shopify.com/s/files/1/0432/8102/3140/files/az_900_study_material.pdf
    • https://cdn.shopify.com/s/files/1/0439/0964/4456/files/artificial_intelligence_in_medical_imaging.pdf
    • https://cdn.shopify.com/s/files/1/0440/0198/4662/files/mumivosolodukene.pdf
    • https://cdn.shopify.com/s/files/1/0433/7709/8910/files/problems_facing_agriculture_in_ghana.pdf
    • https://cdn.shopify.com/s/files/1/0433/5039/2984/files/7106244306.pdf
    • https://cdn.shopify.com/s/files/1/0427/8393/2582/files/58338670497.pdf
    • https://cdn.shopify.com/s/files/1/0432/4704/2715/files/pevexawek.pdf
    • https://cdn.shopify.com/s/files/1/0434/5059/7528/files/trane_xe_90_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/0102/7493/files/wiguro.pdf
    • https://cdn.shopify.com/s/files/1/0429/6241/9863/files/abiotic_and_biotic_factors_worksheet_answer_key.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_off0000535e.bin
f494d08d167a30d16d1a5f7fb86805468a02afd31bbabde7ea63a325cefcf505		 pdf-font-stream PDF embedded font (sfnt) at offset 0x535E 5964 bytes
font_01_sfnt_off000067ae.bin
6dad58907e9e6d1d647884854a4cb615a23a31780a106c8e9082066971007f8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67AE 9680 bytes

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