Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d5a0e0cdafd71f1…

MALICIOUS

PDF

66.4 KB Created: 2020-08-06 19:00:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 365857d3b2fe3de19f10e9e1783c0a8c SHA-1: f1507a5712001fa4c38d0f820ad73a7e5885106d SHA-256: 0d5a0e0cdafd71f12044d7ac8c5da1ff8783cbe68347a21206c0ac7c1736b78f
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, including one pointing to a known malicious redirector at 'https://ttraff.com/pify?keyword=malayala+manorama+calendar+june+2020+pdf'. The heuristic firings indicate this PDF is designed to redirect users to malicious infrastructure, likely for phishing or malware delivery. Although no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier's high confidence suggest 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=malayala+manorama+calendar+june+2020+pdf
    • http://files.confessionsofaspecialneedsmom.com/uploads/1/3/1/3/131397987/zimewasuwilaxut.pdf
    • http://files.minndakcki.com/uploads/1/3/1/4/131437949/5267709.pdf
    • http://files.frostchristmasprops.com/uploads/1/3/0/8/130874240/3140274.pdf
    • http://files.allykeast.com/uploads/1/3/0/7/130776021/sosibam_tasaletilat_nosawologe.pdf
    • http://files.transoceanographer.com/uploads/1/3/2/6/132680994/miwedoxuviraladefudu.pdf
    • http://smc.org.in)MeeraRegularMeera2016SMC7.0.0+20171102Hussain
    • http://smc.org.inhttp://smc.org.in
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43106273748.pdf
    • https://cdn.shopify.com/s/files/1/0430/0151/2090/files/57558332657.pdf
    • https://cdn.shopify.com/s/files/1/0431/3972/7509/files/modern_compressible_flow.pdf
    • https://cdn.shopify.com/s/files/1/0435/0964/5478/files/vomosutatetujugumavapezid.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gujogu.pdf
    • https://cdn.shopify.com/s/files/1/0437/3485/9941/files/92042440946.pdf
    • https://cdn.shopify.com/s/files/1/0431/8950/2110/files/vegan_carb_cycling_meal_plan.pdf
    • https://cdn.shopify.com/s/files/1/0430/0288/8351/files/40977094856.pdf
    • https://cdn.shopify.com/s/files/1/0433/0812/2280/files/pikudejadogalomutoxivoku.pdf
    • https://cdn.shopify.com/s/files/1/0435/9513/7187/files/21434610378.pdf
    • https://cdn.shopify.com/s/files/1/0431/4189/0208/files/xutevirid.pdf
    • https://cdn.shopify.com/s/files/1/0436/8809/9993/files/sorry_ciara_lyric.pdf
    • https://cdn.shopify.com/s/files/1/0433/7926/1590/files/54332326448.pdf
    • https://cdn.shopify.com/s/files/1/0432/4609/2443/files/27615797357.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/
    • https://gitlab.com/smc/meera/blob/master/COPYING
    • http://scripts.sil.org/OFL
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNU
    • http://www.gnu.org/copyleft/gpl.htmRegular

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off00009cc8.bin
70edba5928186adf5db1fb523a717c8918b461a100c79149bb76bec8bd2ce321		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x9CC8 11784 bytes
font_00_sfnt_off00006b1d.bin
e8c7a27ef4cd55fe204b75ff45c65cdeb645e4efbe325f9638b8f1b761ad36ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B1D 5580 bytes
font_01_sfnt_off00007e1a.bin
48fe525f26a65b9eb72bb76a13ec3935551e15076572746d3138a36fd917bf47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E1A 6556 bytes
font_02_sfnt_off0000916f.bin
40ef96da86b6123d577d475be460de15c41b9ca7393a8e650be4e9942aa3c64b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x916F 3720 bytes
font_04_sfnt_off0000c3cd.bin
fff2908b2e76e99a5211a0eb47d072508b05b8923e873622e33539fb579476ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC3CD 4464 bytes
font_05_sfnt_off0000d4eb.bin
f838efa2feabacf9fc307070cb818bc53eeed1c6aef98baf0b711648bef818c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD4EB 11676 bytes

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