Malicious PDF — malware analysis report

Static analysis result for SHA-256 006b07bcd1867072…

MALICIOUS

PDF

83.5 KB Created: 2021-06-01 04:28:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f5a5f169165c9e873bccc7fcc0b1032b SHA-1: 1bf2db94cad9d014bdb1a4296b19a0b4f6e63515 SHA-256: 006b07bcd1867072fa98589cb7f1c6a3274b50552cf1265a78b6a137244fd0e5
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common tactic for SEO spam or phishing. The primary URL, 'https://allytemp.ru/pbw?utm_term=picsart+mod+apk+latest+version+2020+for+pc', suggests a lure for potentially unwanted software or a scam. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate malicious intent, likely related to driving traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://allytemp.ru/pbw?utm_term=picsart+mod+apk+latest+version+2020+for+pc
    • https://cdn-cms.f-static.net/uploads/4421061/normal_5fdbd821c46ff.pdf
    • https://motabuwupogofe.weebly.com/uploads/1/3/1/6/131607229/gusinofobofix_kinurowufanenuf_jojafodasuve_jesemumakuwow.pdf
    • https://voluwunuzusiju.weebly.com/uploads/1/3/1/4/131452861/6050688.pdf
    • https://lavupujewefi.weebly.com/uploads/1/3/4/6/134631736/7190729.pdf
    • https://sumikoxivabozo.weebly.com/uploads/1/3/3/9/133997645/wufowasoj.pdf
    • https://babixedijifaz.weebly.com/uploads/1/3/5/3/135385025/dexagemajisele_sumofafar_saruwetomuxudok_bikozudaxub.pdf
    • https://torimavilok.weebly.com/uploads/1/3/5/9/135984964/janijapifigajax-pirazunes-binadibazuwibi.pdf
    • https://cdn-cms.f-static.net/uploads/4379726/normal_5fea281d34f24.pdf
    • https://tabodixab.weebly.com/uploads/1/3/4/5/134585887/nuwipuvekozifok_fonugiz.pdf
    • https://nipawivas.weebly.com/uploads/1/3/2/6/132680981/pesox_junuremaz_dukugawobo.pdf
    • https://static.s123-cdn-static.com/uploads/4480579/normal_5fe27676a085d.pdf
    • https://cdn-cms.f-static.net/uploads/4485446/normal_5fe8a51019c2d.pdf
    • https://jetabasujupeg.weebly.com/uploads/1/3/4/7/134703241/tokagurajija.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://lijegazoz.pbworks.com/w/file/fetch/144414294/vuxiwovadugugoteferu.pdf
    • https://uploads.strikinglycdn.com/files/2d504172-78f6-40c0-bbb5-bd4e8774931e/bible_concordance_and_dictionary.pdf
    • https://uploads.strikinglycdn.com/files/a9eb917a-5b91-4119-85a6-80e66766268c/what_is_the_value_of_the_gas_constant_r.pdf
    • https://uploads.strikinglycdn.com/files/c7f60a6e-0d7e-479b-aa88-e5469c79ce8f/how_to_use_spectrum_cable_box.pdf
    • http://sepaxebi.pbworks.com/w/file/fetch/144417360/lenovo_google_account_bypass_apk_download.pdf
    • https://uploads.strikinglycdn.com/files/89bc9768-6db3-4ac3-9b31-de4e71f1fba6/.pdf
    • https://uploads.strikinglycdn.com/files/7cb81717-6652-49e6-a1e6-08c41bff3b5d/where_rainbows_end_summary.pdf
    • http://volikedejefa.pbworks.com/w/file/fetch/144418581/what_can_i_say_to_my_niece_on_her_birthday.pdf
    • http://mumubib.pbworks.com/w/file/fetch/144413256/wuditofujusumowibajezaza.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_off00010882.bin
a76137471a176f655cbb477f8334c2e1d4a3e0dfe67dbad94232a17af2f5867b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10882 5700 bytes
font_01_sfnt_off00011bdf.bin
2c5ffc3cf9fdd4051609bfda10d2b5248bb7a910ac1f316f1bf994f349bf265e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11BDF 10720 bytes

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