Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d4b3ffe1236928b…

MALICIOUS

PDF

214.3 KB Created: 2020-08-26 05:05:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 556a6904ea361366fc4a41510ee86ac6 SHA-1: f283d8a9fe7b59eae8be5c784ed91b807e4a548d SHA-256: 7d4b3ffe1236928b250875f5d2c1cf3f9cadf275684a95ba0ba5ca65f1f3d5a9
94 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector infrastructure. The embedded URL, https://ttraff.com/pify?keyword=%25D9%2585%25D9%258A%25D8%25B3%25D8%25AA%25D9%2583+%25D9%2581%25D9%2588%25D9%2584%25D8%25B2+%25D9%2581%25D8%25B1%25D8%25AC%25D9%258A%25D9%2586%25D9%258A%25D8%25A7+%25D9%2588%25D9%258A%25D9%2583%25D9%258A%25D8%25A8%25D9%258A%25D8%25AF%25D9%258A%25D8%25A7, likely serves as a lure to a phishing or scam page. No scripts were extracted, but the presence of a malicious link is sufficient evidence for a high confidence assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 3

  • 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.
  • 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=%25D9%2585%25D9%258A%25D8%25B3%25D8%25AA%25D9%2583+%25D9%2581%25D9%2588%25D9%2584%25D8%25B2+%25D9%2581%25D8%25B1%25D8%25AC%25D9%258A%25D9%2586%25D9%258A%25D8%25A7+%25D9%2588%25D9%258A%25D9%2583%25D9%258A%25D8%25A8%25D9%258A%25D8%25AF%25D9%258A%25D8%25A7
    • http://jabaten.wowtasmania.com.au/uploads/1/3/2/3/132302963/ranujoduposapavuxi.pdf
    • http://fesazaxus.iqmantraining.com.au/uploads/1/3/0/8/130814328/ropetuseloxumet-zafulumomu-suxara-zelobimuraregof.pdf
    • http://files.ordernutsabouttella.com/uploads/1/3/1/3/131398235/21ecfebe6.pdf
    • http://files.nottsu3anetwork.org/uploads/1/3/0/7/130775653/timadexew-jexesutalu-niretub-daripozuzijojep.pdf
    • http://files.jancancan.com/uploads/1/3/1/4/131406413/sosazidisajawaj-ledosol-vaxodavuv-ziwobedomanefon.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0446/6225/9865/files/britain_s_got_talent_2017_episodes.pdf
    • https://cdn.shopify.com/s/files/1/0437/9371/1261/files/74149755448.pdf
    • https://cdn.shopify.com/s/files/1/0432/3698/2944/files/ribumebebib.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/45366335679.pdf
    • https://cdn.shopify.com/s/files/1/0432/7804/1244/files/tezubevid.pdf
    • https://cdn.shopify.com/s/files/1/0429/9977/5381/files/74437004368.pdf
    • https://cdn.shopify.com/s/files/1/0430/8185/9225/files/71375403920.pdf
    • https://cdn.shopify.com/s/files/1/0429/3256/8220/files/veni_creator_spiritus_partitura.pdf
    • https://cdn.shopify.com/s/files/1/0433/8266/9475/files/94207989602.pdf
    • https://cdn.shopify.com/s/files/1/0440/7748/2136/files/after_effects_cs6_free_full.pdf
    • https://cdn.shopify.com/s/files/1/0434/8156/3286/files/chemical_bonding_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0437/3794/0122/files/jawininitiwa.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off00030d9e.bin
87369fdf1e1af343d675f371dced17403bfdb8397d73ed42f077189a3035a81d		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30D9E 34676 bytes
font_00_sfnt_off0002c188.bin
457a95d2d1619e609b977429d761152f7d5a3c0fe23271f2bb247fdca2d50445		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C188 4068 bytes
font_01_sfnt_off0002cf66.bin
e7b0060a5888d683a96628eca9a1af3d6012177d3168511fa19cb7c224311a55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF66 18244 bytes
font_02_sfnt_off0002eb25.bin
93e46492f1fd6081eddeb452d1db127d1dff6a021ff2b21ed561ed2e8796d5e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2EB25 10516 bytes

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